diff --git a/mingw-w64-armadillo/PKGBUILD b/mingw-w64-armadillo/PKGBUILD
index 905733269b..e971dc55d7 100644
--- a/mingw-w64-armadillo/PKGBUILD
+++ b/mingw-w64-armadillo/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="C++ linear algebra library (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://arma.sourceforge.io/"
-license=(spdx:Apache-2.0)
+license=('spdx:Apache-2.0')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs"
          "${MINGW_PACKAGE_PREFIX}-hdf5"
          "${MINGW_PACKAGE_PREFIX}-openblas"
diff --git a/mingw-w64-asio/PKGBUILD b/mingw-w64-asio/PKGBUILD
index 99a64c393c..449f3b0161 100644
--- a/mingw-w64-asio/PKGBUILD
+++ b/mingw-w64-asio/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Cross-platform C++ library for ASynchronous network I/O (mingw-w64)'
 url='https://think-async.com/Asio/'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
-license=('custom:boost')
+license=('spdx:BSL-1.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              #"${MINGW_PACKAGE_PREFIX}-boost"
              "${MINGW_PACKAGE_PREFIX}-autotools"
diff --git a/mingw-w64-bsdfprocessor/PKGBUILD b/mingw-w64-bsdfprocessor/PKGBUILD
index fe8aecf8a7..757b3b22ee 100644
--- a/mingw-w64-bsdfprocessor/PKGBUILD
+++ b/mingw-w64-bsdfprocessor/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc="Application for displaying and editing of BSDF files (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/KimuraRyo/BSDFProcessor'
-license=('MPL2')
+license=('spdx:MPL-2.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
diff --git a/mingw-w64-cereal/PKGBUILD b/mingw-w64-cereal/PKGBUILD
index 3b295e2007..44a5955a5b 100644
--- a/mingw-w64-cereal/PKGBUILD
+++ b/mingw-w64-cereal/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A C++11 library for serialization (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://uscilab.github.io/cereal/"
-license=('New BSD license')
+license=('spdx:BSD-3-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja")
diff --git a/mingw-w64-cmark/PKGBUILD b/mingw-w64-cmark/PKGBUILD
index 3e5a3b4aea..4a0f524ace 100644
--- a/mingw-w64-cmark/PKGBUILD
+++ b/mingw-w64-cmark/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="CommonMark parsing and rendering library and program in C (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/jgm/${_realname}"
-license=('custom:BSD2')
+license=('spdx:BSD-2-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake" "${MINGW_PACKAGE_PREFIX}-python3" "${MINGW_PACKAGE_PREFIX}-cc")
 source=("${_realname}-${pkgver}.tar.gz::https://github.com/jgm/${_realname}/archive/${pkgver}.tar.gz")
 sha512sums=('27383bfef95ae1390c26aff0dd2cbca33704e7d20116bf29da4695d2c9a4146b86daba0da1e91bdb9eab95671702f885e832b3d31d51601731f1dc630df5237b')
diff --git a/mingw-w64-cpputest/PKGBUILD b/mingw-w64-cpputest/PKGBUILD
index a11904c365..3f26c6dfda 100644
--- a/mingw-w64-cpputest/PKGBUILD
+++ b/mingw-w64-cpputest/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Unit testing and mocking framework for C and C++ (mingw-w64)"
 url="https://cpputest.github.io/"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
              "${MINGW_PACKAGE_PREFIX}-cc")
diff --git a/mingw-w64-creduce/PKGBUILD b/mingw-w64-creduce/PKGBUILD
index b6410232b6..a427e3f719 100644
--- a/mingw-w64-creduce/PKGBUILD
+++ b/mingw-w64-creduce/PKGBUILD
@@ -20,7 +20,7 @@ depends=('perl-Benchmark-Timer'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/csmith-project/creduce'
-license=('custom:University of Illinois/NCSA Open Source License')
+license=('spdx:NCSA')
 makedepends=("${MINGW_PACKAGE_PREFIX}-autotools" "${MINGW_PACKAGE_PREFIX}-cc" "git")
 source=(${_realname}::git+https://github.com/csmith-project/creduce#commit=${_commit}
         "llvm-config-cygpath")
diff --git a/mingw-w64-crypto++/PKGBUILD b/mingw-w64-crypto++/PKGBUILD
index 5236858485..69d9f3b032 100644
--- a/mingw-w64-crypto++/PKGBUILD
+++ b/mingw-w64-crypto++/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Crypto++ Library is a free C++ class library of cryptographic schemes (
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32'  'clangarm64')
 url="https://www.cryptopp.com/"
-license=('Boost Software License 1.0')
+license=('spdx:BSL-1.0')
 options=('staticlibs' 'strip' 'emptydirs')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
diff --git a/mingw-w64-dlib/PKGBUILD b/mingw-w64-dlib/PKGBUILD
index a9090019a2..052792a7ce 100644
--- a/mingw-w64-dlib/PKGBUILD
+++ b/mingw-w64-dlib/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A toolkit for making real world machine learning and data analysis appl
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='http://dlib.net/'
-license=('Boost')
+license=('spdx:BSL-1.0')
 depends=("${MINGW_PACKAGE_PREFIX}-lapack"
          "${MINGW_PACKAGE_PREFIX}-giflib"
          "${MINGW_PACKAGE_PREFIX}-libpng"
diff --git a/mingw-w64-dnscrypt-proxy/PKGBUILD b/mingw-w64-dnscrypt-proxy/PKGBUILD
index c2a972448f..e09d766bde 100644
--- a/mingw-w64-dnscrypt-proxy/PKGBUILD
+++ b/mingw-w64-dnscrypt-proxy/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A tool for securing communications between a client and a DNS resolver
 arch=(any)
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/DNSCrypt/dnscrypt-proxy"
-license=('custom:ISC')
+license=('spdx:ISC')
 makedepends=("${MINGW_PACKAGE_PREFIX}-go"
              "${MINGW_PACKAGE_PREFIX}-cc"
              "git")
diff --git a/mingw-w64-ecpprog/PKGBUILD b/mingw-w64-ecpprog/PKGBUILD
index 75ac65a7f9..d66b86c5cb 100644
--- a/mingw-w64-ecpprog/PKGBUILD
+++ b/mingw-w64-ecpprog/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="ecpprog: basic driver for FTDI based JTAG probes, to program ECP5 FPGAs
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/gregdavill/ecpprog"
-license=('ISC')
+license=('spdx:ISC')
 groups=("${MINGW_PACKAGE_PREFIX}-eda")
 depends=("${MINGW_PACKAGE_PREFIX}-libftdi")
 makedepends=("git" "${MINGW_PACKAGE_PREFIX}-cc")
diff --git a/mingw-w64-eigen3/PKGBUILD b/mingw-w64-eigen3/PKGBUILD
index 6137e19b30..5102590c5a 100644
--- a/mingw-w64-eigen3/PKGBUILD
+++ b/mingw-w64-eigen3/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Lightweight C++ template library for vector and matrix math (mingw-w64)
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://eigen.tuxfamily.org/'
-license=('MPL2')
+license=('spdx:MPL-2.0')
 options=('strip' 'staticlibs')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-doxygen"
diff --git a/mingw-w64-glslviewer/PKGBUILD b/mingw-w64-glslviewer/PKGBUILD
index 1ad09f8a45..8ab6b813bc 100644
--- a/mingw-w64-glslviewer/PKGBUILD
+++ b/mingw-w64-glslviewer/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc=" Console-based GLSL Sandbox for 2D/3D shaders shaders (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/patriciogonzalezvivo/glslViewer"
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 depends=(
   "${MINGW_PACKAGE_PREFIX}-glfw"
   "${MINGW_PACKAGE_PREFIX}-glew"
diff --git a/mingw-w64-gn/PKGBUILD b/mingw-w64-gn/PKGBUILD
index 8519c42fab..3497510499 100644
--- a/mingw-w64-gn/PKGBUILD
+++ b/mingw-w64-gn/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Meta-build system that generates build files for Ninja (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://gn.googlesource.com/gn/"
-license=('spdx:BSD')
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-ninja"
diff --git a/mingw-w64-graphite2/PKGBUILD b/mingw-w64-graphite2/PKGBUILD
index 44448789a3..5087b141f6 100644
--- a/mingw-w64-graphite2/PKGBUILD
+++ b/mingw-w64-graphite2/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Font rendering capabilities for complex non-Roman writing systems (ming
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/silnrsi/graphite"
-license=('LGPL2.1+')
+license=('spdx:LGPL-2.1-or-later')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-python"
diff --git a/mingw-w64-helix/PKGBUILD b/mingw-w64-helix/PKGBUILD
index 72ec4e5830..87bf52c64f 100644
--- a/mingw-w64-helix/PKGBUILD
+++ b/mingw-w64-helix/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A post-modern modal text editor (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64')
 url="https://github.com/helix-editor/helix"
-license=('MPL2')
+license=('spdx:MPL-2.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-rust"
              "${MINGW_PACKAGE_PREFIX}-mdbook")
 options=('staticlibs' 'strip')
diff --git a/mingw-w64-hiredis/PKGBUILD b/mingw-w64-hiredis/PKGBUILD
index 6c2df0d586..ce80df37bf 100644
--- a/mingw-w64-hiredis/PKGBUILD
+++ b/mingw-w64-hiredis/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Minimalistic C client for Redis"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/redis/hiredis"
-license=("BSD-3-Clause")
+license=('spdx:BSD-3-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
diff --git a/mingw-w64-icestorm/PKGBUILD b/mingw-w64-icestorm/PKGBUILD
index b88a9d72f5..4e375e9a45 100644
--- a/mingw-w64-icestorm/PKGBUILD
+++ b/mingw-w64-icestorm/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Simple tools for analyzing and creating bitstream files for Lattice iCE
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="http://www.clifford.at/icestorm/"
-license=("ISC")
+license=('spdx:ISC')
 groups=("${MINGW_PACKAGE_PREFIX}-eda")
 depends=(
   "${MINGW_PACKAGE_PREFIX}-gcc-libs"
diff --git a/mingw-w64-icu/PKGBUILD b/mingw-w64-icu/PKGBUILD
index c4562c162b..64bf223f2f 100644
--- a/mingw-w64-icu/PKGBUILD
+++ b/mingw-w64-icu/PKGBUILD
@@ -11,7 +11,7 @@ arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 pkgdesc="International Components for Unicode library (mingw-w64)"
 url="https://icu.unicode.org/home/"
-license=('custom:icu')
+license=('spdx:ICU')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-autotools"
diff --git a/mingw-w64-include-what-you-use/PKGBUILD b/mingw-w64-include-what-you-use/PKGBUILD
index 052dd46292..84eddff7cd 100644
--- a/mingw-w64-include-what-you-use/PKGBUILD
+++ b/mingw-w64-include-what-you-use/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A tool for use with clang to analyze #includes in C and C++ source file
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='http://include-what-you-use.org'
-license=('NCSA')
+license=('spdx:NCSA')
 depends=("${MINGW_PACKAGE_PREFIX}-clang"
          "${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
diff --git a/mingw-w64-jp2-pixbuf-loader/PKGBUILD b/mingw-w64-jp2-pixbuf-loader/PKGBUILD
index 42f23e9c05..a3632325e6 100644
--- a/mingw-w64-jp2-pixbuf-loader/PKGBUILD
+++ b/mingw-w64-jp2-pixbuf-loader/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="JPEG2000 GDK Pixbuf Loader library (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://notabug.org/necklace/jp2-pixbuf-loader"
-license=(spdx:LGPL-2.1-or-later)
+license=('spdx:LGPL-2.1-or-later')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-pkg-config"
              "${MINGW_PACKAGE_PREFIX}-meson")
diff --git a/mingw-w64-json-glib/PKGBUILD b/mingw-w64-json-glib/PKGBUILD
index 90664316fb..920ce3ed74 100644
--- a/mingw-w64-json-glib/PKGBUILD
+++ b/mingw-w64-json-glib/PKGBUILD
@@ -16,7 +16,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-meson"
              "${MINGW_PACKAGE_PREFIX}-gobject-introspection"
              "${MINGW_PACKAGE_PREFIX}-gtk-doc")
 options=('strip' 'staticlibs')
-license=('LGPL2.1+')
+license=('spdx:LGPL-2.1-or-later')
 url="https://wiki.gnome.org/Projects/JsonGlib"
 source=("https://download.gnome.org/sources/${_realname}/${pkgver%.*}/${_realname}-${pkgver}.tar.xz")
 sha256sums=('96ec98be7a91f6dde33636720e3da2ff6ecbb90e76ccaa49497f31a6855a490e')
diff --git a/mingw-w64-l-smash/PKGBUILD b/mingw-w64-l-smash/PKGBUILD
index 86209f93d2..bee328f150 100644
--- a/mingw-w64-l-smash/PKGBUILD
+++ b/mingw-w64-l-smash/PKGBUILD
@@ -9,7 +9,7 @@ pkgrel=3
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://l-smash.github.io/l-smash/"
-license=('ISC')
+license=('spdx:ISC')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc" "${MINGW_PACKAGE_PREFIX}-autotools")
 options=('strip' 'staticlibs')
 source=(${_realname}-${pkgver}.tar.gz::"https://github.com/l-smash/l-smash/archive/v${pkgver}.tar.gz"
diff --git a/mingw-w64-libaec/PKGBUILD b/mingw-w64-libaec/PKGBUILD
index 4c508187b4..5d2e0b4df2 100644
--- a/mingw-w64-libaec/PKGBUILD
+++ b/mingw-w64-libaec/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Adaptive Entropy Coding library (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://gitlab.dkrz.de/k202009/libaec"
-license=('BSD-2-Clause')
+license=('spdx:BSD-2-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
              "${MINGW_PACKAGE_PREFIX}-cc")
diff --git a/mingw-w64-libblocksruntime/PKGBUILD b/mingw-w64-libblocksruntime/PKGBUILD
index 631a0add41..58a7eedf1a 100644
--- a/mingw-w64-libblocksruntime/PKGBUILD
+++ b/mingw-w64-libblocksruntime/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='compiler-rt Blocks runtime library for Clang (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://compiler-rt.llvm.org"
-license=("custom:University of Illinois" "MIT")
+license=('spdx:NCSA' 'spdx:MIT')
 depends=("${MINGW_PACKAGE_PREFIX}-clang")
 makedepends=("${MINGW_PACKAGE_PREFIX}-autotools" "${MINGW_PACKAGE_PREFIX}-cc")
 source=("https://deb.debian.org/debian/pool/main/libb/${_realname}/${_realname}_${pkgver}.orig.tar.gz"
diff --git a/mingw-w64-libbsdf/PKGBUILD b/mingw-w64-libbsdf/PKGBUILD
index 1d29394355..080eec4b3b 100644
--- a/mingw-w64-libbsdf/PKGBUILD
+++ b/mingw-w64-libbsdf/PKGBUILD
@@ -11,7 +11,7 @@ pkgdesc="Library for handling BSDF files (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/KimuraRyo/libbsdf'
-license=('MPL2')
+license=('spdx:MPL-2.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
diff --git a/mingw-w64-libcdr/PKGBUILD b/mingw-w64-libcdr/PKGBUILD
index 68428d29e6..7cd94705d4 100644
--- a/mingw-w64-libcdr/PKGBUILD
+++ b/mingw-w64-libcdr/PKGBUILD
@@ -8,7 +8,7 @@ pkgrel=5
 pkgdesc="libcdr is a library and a set of tools for reading and converting binary files produced by Corel DRAW (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=('MPL2')
+license=('spdx:MPL-2.0')
 url="https://wiki.documentfoundation.org/DLP/Libraries/libcdr"
 options=('staticlibs' 'strip')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
diff --git a/mingw-w64-libmypaint/PKGBUILD b/mingw-w64-libmypaint/PKGBUILD
index 3c0bf4a3cb..0affc05e86 100644
--- a/mingw-w64-libmypaint/PKGBUILD
+++ b/mingw-w64-libmypaint/PKGBUILD
@@ -11,7 +11,7 @@ pkgdesc="Brush engine used by MyPaint (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="http://mypaint.org"
-license=("ISC")
+license=('spdx:ISC')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-autotools"
              "${MINGW_PACKAGE_PREFIX}-gobject-introspection"
diff --git a/mingw-w64-libsamplerate/PKGBUILD b/mingw-w64-libsamplerate/PKGBUILD
index bf86414677..6764caa974 100644
--- a/mingw-w64-libsamplerate/PKGBUILD
+++ b/mingw-w64-libsamplerate/PKGBUILD
@@ -9,7 +9,7 @@ pkgrel=2
 pkgdesc="Secret Rabbit Code (aka libsamplerate) is a Sample Rate Converter for audio (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=('BSD-2-Clause')
+license=('spdx:BSD-2-Clause')
 url="http://www.mega-nerd.com"
 depends=("${MINGW_PACKAGE_PREFIX}-libsndfile"
          "${MINGW_PACKAGE_PREFIX}-fftw")
diff --git a/mingw-w64-libserialport/PKGBUILD b/mingw-w64-libserialport/PKGBUILD
index adc8314fd9..c609da5833 100644
--- a/mingw-w64-libserialport/PKGBUILD
+++ b/mingw-w64-libserialport/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc="cross-platform library for accessing serial ports (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://sigrok.org/wiki/Libserialport"
-license=('LGPL3+')
+license=('spdx:LGPL-3.0-or-later')
 makedepends=("${MINGW_PACKAGE_PREFIX}-autotools" "${MINGW_PACKAGE_PREFIX}-cc")
 source=("git://sigrok.org/${_realname}#commit=$_commit")
 sha256sums=('SKIP')
diff --git a/mingw-w64-libsodium/PKGBUILD b/mingw-w64-libsodium/PKGBUILD
index 6d47697431..f03305295d 100644
--- a/mingw-w64-libsodium/PKGBUILD
+++ b/mingw-w64-libsodium/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="P(ortable|ackageable) NaCl-based crypto library (mingw-w64)"
 arch=(any)
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/jedisct1/libsodium"
-license=('custom:ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-autotools" "${MINGW_PACKAGE_PREFIX}-cc")
 source=("https://download.libsodium.org/libsodium/releases/${_realname}-${pkgver}.tar.gz")
diff --git a/mingw-w64-libvisio/PKGBUILD b/mingw-w64-libvisio/PKGBUILD
index 64e06c4aa0..bf7a45f276 100644
--- a/mingw-w64-libvisio/PKGBUILD
+++ b/mingw-w64-libvisio/PKGBUILD
@@ -8,7 +8,7 @@ pkgrel=10
 pkgdesc="libvisio is a library and a set of tools for reading and converting MS Visio diagram (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=('MPL2')
+license=('spdx:MPL-2.0')
 url="https://wiki.documentfoundation.org/DLP/Libraries/libvisio"
 options=('staticlibs' 'strip')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
diff --git a/mingw-w64-libwpd/PKGBUILD b/mingw-w64-libwpd/PKGBUILD
index b13778bab1..078e4c065d 100644
--- a/mingw-w64-libwpd/PKGBUILD
+++ b/mingw-w64-libwpd/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Library for Importing WordPerfect (tm) Documents (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://libwpd.sourceforge.io/"
-license=("LGPL-2.1+" "MPL-2.0+")
+license=('spdx:LGPL-2.1-or-later' 'spdx:MPL-2.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc" "${MINGW_PACKAGE_PREFIX}-autotools")
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs"
          "${MINGW_PACKAGE_PREFIX}-librevenge"
diff --git a/mingw-w64-libwpg/PKGBUILD b/mingw-w64-libwpg/PKGBUILD
index 11084ed823..9e23b6be89 100644
--- a/mingw-w64-libwpg/PKGBUILD
+++ b/mingw-w64-libwpg/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Library to read and parse graphics in WordPerfect Graphics format (ming
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://libwpg.sourceforge.io/"
-license=("LGPL-2.1+" "MPL-2.0+")
+license=('spdx:LGPL-2.1-or-later' 'spdx:MPL-2.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc" "${MINGW_PACKAGE_PREFIX}-autotools")
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs"
          "${MINGW_PACKAGE_PREFIX}-librevenge"
diff --git a/mingw-w64-minisign/PKGBUILD b/mingw-w64-minisign/PKGBUILD
index cc67b8c1d8..e49a73a168 100644
--- a/mingw-w64-minisign/PKGBUILD
+++ b/mingw-w64-minisign/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A dead simple tool to sign files and verify digital signatures (mingw-w
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/jedisct1/minisign"
-license=('custom:ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-libsodium")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
diff --git a/mingw-w64-mpg123/PKGBUILD b/mingw-w64-mpg123/PKGBUILD
index 0209f08534..e3c589db8d 100644
--- a/mingw-w64-mpg123/PKGBUILD
+++ b/mingw-w64-mpg123/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A console based real time MPEG Audio Player for Layer 1, 2 and 3 (mingw
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://www.mpg123.com/"
-license=('sdpx:LGPL-2.1-or-later')
+license=('spdx:LGPL-2.1-or-later')
 makedepends=("${MINGW_PACKAGE_PREFIX}-openal"
              "${MINGW_PACKAGE_PREFIX}-portaudio"
              "${MINGW_PACKAGE_PREFIX}-autotools"
diff --git a/mingw-w64-msgpack-c/PKGBUILD b/mingw-w64-msgpack-c/PKGBUILD
index 22ccf2e18e..e51d05665c 100644
--- a/mingw-w64-msgpack-c/PKGBUILD
+++ b/mingw-w64-msgpack-c/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="MessagePack implementation for C and C++ (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/msgpack/msgpack-c"
-license=('custom:Boost Software License 1.0')
+license=('spdx:BSL-1.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-gtest"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
diff --git a/mingw-w64-mumps/PKGBUILD b/mingw-w64-mumps/PKGBUILD
index a20ef09e02..947b08ecca 100644
--- a/mingw-w64-mumps/PKGBUILD
+++ b/mingw-w64-mumps/PKGBUILD
@@ -46,7 +46,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-gcc-fortran")
 optdepends=("${MINGW_PACKAGE_PREFIX}-tcl: build & run test suite")
 options=('strip' 'staticlibs')
-license=('CeCILL-C')
+license=('spdx:CECILL-C')
 url="http://mumps.enseeiht.fr/"
 source=("http://mumps.enseeiht.fr/MUMPS_${pkgver}.tar.gz"
         "0001-makefile.inc.patch"
diff --git a/mingw-w64-mypaint-brushes/PKGBUILD b/mingw-w64-mypaint-brushes/PKGBUILD
index 363fff0239..fbb6e3be8b 100644
--- a/mingw-w64-mypaint-brushes/PKGBUILD
+++ b/mingw-w64-mypaint-brushes/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Brushes for MyPaint (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/mypaint/mypaint-brushes"
-license=("ISC")
+license=('spdx:ISC')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc" "${MINGW_PACKAGE_PREFIX}-autotools")
 depends=("${MINGW_PACKAGE_PREFIX}-libmypaint")
 options=('strip' '!debug')
diff --git a/mingw-w64-mypaint-brushes2/PKGBUILD b/mingw-w64-mypaint-brushes2/PKGBUILD
index e902669099..808dea48ef 100644
--- a/mingw-w64-mypaint-brushes2/PKGBUILD
+++ b/mingw-w64-mypaint-brushes2/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Brushes for MyPaint 2.0 (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/mypaint/mypaint-brushes"
-license=("ISC")
+license=('spdx:ISC')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc" "${MINGW_PACKAGE_PREFIX}-autotools")
 options=('strip' '!debug')
 source=(${_realname}-${pkgver}.tar.gz::https://github.com/mypaint/mypaint-brushes/archive/v${pkgver}.tar.gz)
diff --git a/mingw-w64-mypaint/PKGBUILD b/mingw-w64-mypaint/PKGBUILD
index 6cdb5198d1..3b0db9708c 100644
--- a/mingw-w64-mypaint/PKGBUILD
+++ b/mingw-w64-mypaint/PKGBUILD
@@ -28,7 +28,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-pkg-config"
              "${MINGW_PACKAGE_PREFIX}-swig"
              "${MINGW_PACKAGE_PREFIX}-cc")
 options=('strip' '!debug' 'staticlibs')
-license=("GPL2" "ISC")
+license=("GPL2" 'spdx:ISC')
 url="http://mypaint.org"
 source=(https://github.com/mypaint/mypaint/releases/download/v${pkgver}/mypaint-${pkgver}.tar.xz)
 sha256sums=('f3e437d7cdd5fd28ef6532e8ab6b4b05d842bcdd644f16a0162dad3d8e57bb16')
diff --git a/mingw-w64-nextpnr/PKGBUILD b/mingw-w64-nextpnr/PKGBUILD
index 93c0e03905..73b8199614 100644
--- a/mingw-w64-nextpnr/PKGBUILD
+++ b/mingw-w64-nextpnr/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Portable FPGA place and route tool (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/YosysHQ/nextpnr"
-license=('ISC')
+license=('spdx:ISC')
 groups=("${MINGW_PACKAGE_PREFIX}-eda")
 depends=(
   "${MINGW_PACKAGE_PREFIX}-boost"
diff --git a/mingw-w64-nodeeditor/PKGBUILD b/mingw-w64-nodeeditor/PKGBUILD
index 517eacac77..ba8a311432 100644
--- a/mingw-w64-nodeeditor/PKGBUILD
+++ b/mingw-w64-nodeeditor/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="NodeEditor is conceived as a general-purpose Qt-based library aimed at
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/paceholder/nodeeditor"
-license=("BSD-3")
+license=('spdx:BSD-3-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja")
diff --git a/mingw-w64-ocaml/PKGBUILD b/mingw-w64-ocaml/PKGBUILD
index 3bdae515d1..0f8adaa8a6 100644
--- a/mingw-w64-ocaml/PKGBUILD
+++ b/mingw-w64-ocaml/PKGBUILD
@@ -14,7 +14,7 @@ pkgdesc="An industrial strength programming language supporting functional, impe
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64')
 url='https://ocaml.org/'
-license=('Q Public Licence 1.0' 'GPL2')
+license=('spdx:QPL-1.0' 'GPL2')
 makedepends=("${MINGW_PACKAGE_PREFIX}-ncurses"
              "${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-autotools")
@@ -117,7 +117,7 @@ package_ocaml() {
 
 package_ocaml-compiler-libs() {
   pkgdesc="Several modules used internally by the OCaml compiler (mingw-w64)"
-  license=('Q Public Licence 1.0')
+  license=('spdx:QPL-1.0')
   depends=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 
   cd "${srcdir}/${_realname}-${pkgver}"
diff --git a/mingw-w64-openvr/PKGBUILD b/mingw-w64-openvr/PKGBUILD
index 7043c2583a..a969424405 100644
--- a/mingw-w64-openvr/PKGBUILD
+++ b/mingw-w64-openvr/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="API and SDK that allows access to VR hardware from multiple vendors (mi
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/ValveSoftware/openvr/"
-license=("BSD3")
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
diff --git a/mingw-w64-perl/PKGBUILD b/mingw-w64-perl/PKGBUILD
index afd91bcb32..b0662fdd46 100644
--- a/mingw-w64-perl/PKGBUILD
+++ b/mingw-w64-perl/PKGBUILD
@@ -26,7 +26,7 @@ pkgdesc="A highly capable, feature-rich programming language (mingw-w64)"
 url="https://www.perl.org"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=("Artistic-1.0-Perl" "GPL-1.0-or-later")
+license=('spdx:Artistic-1.0-Perl' 'spdx:GPL-1.0-or-later')
 options=("staticlibs" "strip" "docs" "!purge" "emptydirs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-make"
diff --git a/mingw-w64-pkgconf/PKGBUILD b/mingw-w64-pkgconf/PKGBUILD
index f6e57dd9e1..9343852485 100644
--- a/mingw-w64-pkgconf/PKGBUILD
+++ b/mingw-w64-pkgconf/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc='pkg-config compatible utility which does not depend on glib'
 url='https://github.com/pkgconf/pkgconf'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=('ISC')
+license=('spdx:ISC')
 options=('!debug' 'strip')
 provides=("${MINGW_PACKAGE_PREFIX}-pkg-config")
 conflicts=("${MINGW_PACKAGE_PREFIX}-pkg-config")
diff --git a/mingw-w64-poco/PKGBUILD b/mingw-w64-poco/PKGBUILD
index f3c5c43cbb..ac326e2ac1 100644
--- a/mingw-w64-poco/PKGBUILD
+++ b/mingw-w64-poco/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="POrtable COmponents C++ Libraries (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://pocoproject.org/"
-license=("boost")
+license=('spdx:BSL-1.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
diff --git a/mingw-w64-python-boolean.py/PKGBUILD b/mingw-w64-python-boolean.py/PKGBUILD
index 89fa91596c..2ca5200166 100644
--- a/mingw-w64-python-boolean.py/PKGBUILD
+++ b/mingw-w64-python-boolean.py/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Define boolean algebras, create and parse boolean expressions and creat
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/bastikr/boolean.py'
-license=('BSD-2-Clause')
+license=('spdx:BSD-2-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python"
              "${MINGW_PACKAGE_PREFIX}-python-setuptools")
diff --git a/mingw-w64-python-calver/PKGBUILD b/mingw-w64-python-calver/PKGBUILD
index 7fb7a7dd5e..6db73ad794 100644
--- a/mingw-w64-python-calver/PKGBUILD
+++ b/mingw-w64-python-calver/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Setuptools extension for CalVer package versions (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/di/calver'
-license=('Apache-2.0')
+license=('spdx:Apache-2.0')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-build"
              "${MINGW_PACKAGE_PREFIX}-python-installer"
diff --git a/mingw-w64-python-cerberus/PKGBUILD b/mingw-w64-python-cerberus/PKGBUILD
index 736aa1ba19..fcb88ee3e7 100644
--- a/mingw-w64-python-cerberus/PKGBUILD
+++ b/mingw-w64-python-cerberus/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Lightweight, extensible schema and data validation tool for Python dict
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/pyeve/cerberus"
-license=('ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-python-setuptools")
 checkdepends=("${MINGW_PACKAGE_PREFIX}-python-pytest-runner")
 source=("https://github.com/pyeve/cerberus/archive/$pkgver.tar.gz")
diff --git a/mingw-w64-python-colour/PKGBUILD b/mingw-w64-python-colour/PKGBUILD
index 551fa46ad8..7d30576d1e 100644
--- a/mingw-w64-python-colour/PKGBUILD
+++ b/mingw-w64-python-colour/PKGBUILD
@@ -9,7 +9,7 @@ epoch=1
 pkgdesc="converts and manipulates various color representation (HSL, RVB, web, X11, ...) (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 url="https://pypi.org/pypi/colour"
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-setuptools"
diff --git a/mingw-w64-python-comm/PKGBUILD b/mingw-w64-python-comm/PKGBUILD
index d44d40ee0e..c784276942 100644
--- a/mingw-w64-python-comm/PKGBUILD
+++ b/mingw-w64-python-comm/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Jupyter Python Comm implementation, for usage in ipykernel, xeus-python
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/ipython/comm'
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
          "${MINGW_PACKAGE_PREFIX}-python-traitlets")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-build"
diff --git a/mingw-w64-python-contourpy/PKGBUILD b/mingw-w64-python-contourpy/PKGBUILD
index d316fcbb0d..90029ec62d 100644
--- a/mingw-w64-python-contourpy/PKGBUILD
+++ b/mingw-w64-python-contourpy/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Python library for calculating contours of 2D quadrilateral grids (ming
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://www.somepackage.org/'
-license=('BSD3')
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
          "${MINGW_PACKAGE_PREFIX}-python-numpy")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-build"
diff --git a/mingw-w64-python-ford/PKGBUILD b/mingw-w64-python-ford/PKGBUILD
index 228efc6dd3..e45d6a1bcd 100644
--- a/mingw-w64-python-ford/PKGBUILD
+++ b/mingw-w64-python-ford/PKGBUILD
@@ -8,7 +8,7 @@ pkgver=6.1.17
 pkgrel=1
 pkgdesc="FORD, standing for FORtran Documenter, is an automatic documentation generator for modern Fortran programs (mingw-w64)"
 url="https://github.com/Fortran-FOSS-Programmers/ford"
-license=("GPL-3.0-or-later")
+license=('spdx:GPL-3.0-or-later')
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
diff --git a/mingw-w64-python-fprettify/PKGBUILD b/mingw-w64-python-fprettify/PKGBUILD
index da83bd4dc7..e0139d9131 100644
--- a/mingw-w64-python-fprettify/PKGBUILD
+++ b/mingw-w64-python-fprettify/PKGBUILD
@@ -8,7 +8,7 @@ pkgver=0.3.7
 pkgrel=3
 pkgdesc="An auto-formatter for modern Fortran code that imposes strict whitespace formatting, written in Python (mingw-w64)"
 url="https://github.com/pseewald/fprettify"
-license=("GPL-3.0-or-later")
+license=('spdx:GPL-3.0-or-later')
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
diff --git a/mingw-w64-python-fypp/PKGBUILD b/mingw-w64-python-fypp/PKGBUILD
index 5a0f4bca8e..cd8edecb92 100644
--- a/mingw-w64-python-fypp/PKGBUILD
+++ b/mingw-w64-python-fypp/PKGBUILD
@@ -8,7 +8,7 @@ pkgver=3.1
 pkgrel=2
 pkgdesc="Python powered Fortran preprocessor (mingw-w64)"
 url="https://fypp.readthedocs.io/"
-license=("BSD-2-Clause")
+license=('spdx:BSD-2-Clause')
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
diff --git a/mingw-w64-python-jupyter-nbclient/PKGBUILD b/mingw-w64-python-jupyter-nbclient/PKGBUILD
index 29533a1bc5..174a6a9472 100644
--- a/mingw-w64-python-jupyter-nbclient/PKGBUILD
+++ b/mingw-w64-python-jupyter-nbclient/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='A client library for executing Jupyter notebooks (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/jupyter/nbclient'
-license=('spdx:BSD')
+license=('spdx:BSD-3-Clause')
 depends=(
     "${MINGW_PACKAGE_PREFIX}-python"
     "${MINGW_PACKAGE_PREFIX}-python-jupyter-nbformat"
diff --git a/mingw-w64-python-jupyter-nbconvert/PKGBUILD b/mingw-w64-python-jupyter-nbconvert/PKGBUILD
index bf312d67d1..60680c6c48 100644
--- a/mingw-w64-python-jupyter-nbconvert/PKGBUILD
+++ b/mingw-w64-python-jupyter-nbconvert/PKGBUILD
@@ -12,7 +12,7 @@ pkgdesc="Convert Jupyter notebooks to other formats (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/jupyter/nbconvert'
-license=('spdx:BSD')
+license=('spdx:BSD-3-Clause')
 options=(!strip)
 depends=(
     ${MINGW_PACKAGE_PREFIX}-python
diff --git a/mingw-w64-python-jupyter-packaging/PKGBUILD b/mingw-w64-python-jupyter-packaging/PKGBUILD
index c4f3bff07d..1fb8065c36 100644
--- a/mingw-w64-python-jupyter-packaging/PKGBUILD
+++ b/mingw-w64-python-jupyter-packaging/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Jupyter Packaging Utilities. (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/jupyter/jupyter-packaging'
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
          "${MINGW_PACKAGE_PREFIX}-python-packaging"
          "${MINGW_PACKAGE_PREFIX}-python-tomlkit"
diff --git a/mingw-w64-python-librosa/PKGBUILD b/mingw-w64-python-librosa/PKGBUILD
index 5a03de6f8f..2b33537cf2 100644
--- a/mingw-w64-python-librosa/PKGBUILD
+++ b/mingw-w64-python-librosa/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Python library for music and audio analysis (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64')
 url="https://librosa.org/"
-license=('ISC')
+license=('spdx:ISC')
 depends=(
     "${MINGW_PACKAGE_PREFIX}-python-audioread"
     "${MINGW_PACKAGE_PREFIX}-python-decorator"
diff --git a/mingw-w64-python-lz4/PKGBUILD b/mingw-w64-python-lz4/PKGBUILD
index 0b0f14ff5e..e7fad27dd7 100644
--- a/mingw-w64-python-lz4/PKGBUILD
+++ b/mingw-w64-python-lz4/PKGBUILD
@@ -12,7 +12,7 @@ pkgdesc="This package provides python bindings for the LZ4 compression library (
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/python-lz4/python-lz4'
-license=('BSD3')
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-setuptools-scm"
              "${MINGW_PACKAGE_PREFIX}-python-pkgconfig"
diff --git a/mingw-w64-python-mapbox-earcut/PKGBUILD b/mingw-w64-python-mapbox-earcut/PKGBUILD
index 30fb66bd83..d3d173b0eb 100644
--- a/mingw-w64-python-mapbox-earcut/PKGBUILD
+++ b/mingw-w64-python-mapbox-earcut/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc="Python bindings for the mapbox earcut C++ polygon triangulation library
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://pypi.org/project/mapbox-earcut/'
-license=('ISC')
+license=('spdx:ISC')
 depends=(
   "${MINGW_PACKAGE_PREFIX}-pybind11"
   "${MINGW_PACKAGE_PREFIX}-python"
diff --git a/mingw-w64-python-markdown-include/PKGBUILD b/mingw-w64-python-markdown-include/PKGBUILD
index 1b202f0f00..eea86673c9 100644
--- a/mingw-w64-python-markdown-include/PKGBUILD
+++ b/mingw-w64-python-markdown-include/PKGBUILD
@@ -8,7 +8,7 @@ pkgver=0.8.0
 pkgrel=1
 pkgdesc="Provides syntax for Python-Markdown which allows for the inclusion of the contents of other Markdown documents (mingw-w64)"
 url="https://github.com/cmacmackin/md-environ/"
-license=("GPL-3.0-or-later")
+license=('spdx:GPL-3.0-or-later')
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
diff --git a/mingw-w64-python-matplotlib-inline/PKGBUILD b/mingw-w64-python-matplotlib-inline/PKGBUILD
index f946c29845..f2339744fb 100644
--- a/mingw-w64-python-matplotlib-inline/PKGBUILD
+++ b/mingw-w64-python-matplotlib-inline/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc='Inline Matplotlib backend for Jupyter (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://pypi.org/project/matplotlib-inline/"
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 depends=(
   "${MINGW_PACKAGE_PREFIX}-python"
   "${MINGW_PACKAGE_PREFIX}-python-traitlets"
diff --git a/mingw-w64-python-md-environ/PKGBUILD b/mingw-w64-python-md-environ/PKGBUILD
index c9660ef6d6..b3070a3e52 100644
--- a/mingw-w64-python-md-environ/PKGBUILD
+++ b/mingw-w64-python-md-environ/PKGBUILD
@@ -8,7 +8,7 @@ pkgver=0.1.0
 pkgrel=2
 pkgdesc="Python-Markdown extension to use environment variables (mingw-w64)"
 url="https://github.com/cmacmackin/md-environ/"
-license=("GPL-3.0-or-later")
+license=('spdx:GPL-3.0-or-later')
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
diff --git a/mingw-w64-python-pathspec/PKGBUILD b/mingw-w64-python-pathspec/PKGBUILD
index d23c99f784..35f8fd9f5b 100644
--- a/mingw-w64-python-pathspec/PKGBUILD
+++ b/mingw-w64-python-pathspec/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Utility library for gitignore style pattern matching of file paths (min
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/cpburnz/python-path-specification"
-license=('MPL2')
+license=('spdx:MPL-2.0')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-setuptools")
 source=("https://files.pythonhosted.org/packages/source/${_realname::1}/$_realname/$_realname-$pkgver.tar.gz")
diff --git a/mingw-w64-python-pooch/PKGBUILD b/mingw-w64-python-pooch/PKGBUILD
index 299dde5495..ded7ef2c9d 100644
--- a/mingw-w64-python-pooch/PKGBUILD
+++ b/mingw-w64-python-pooch/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Python library for fetching and caching data files (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://www.fatiando.org/pooch/latest/"
-license=('BSD 3-clause')
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-python-appdirs"
          "${MINGW_PACKAGE_PREFIX}-python-packaging"
          "${MINGW_PACKAGE_PREFIX}-python-requests")
diff --git a/mingw-w64-python-progress/PKGBUILD b/mingw-w64-python-progress/PKGBUILD
index 0692b5981d..cfb625127c 100644
--- a/mingw-w64-python-progress/PKGBUILD
+++ b/mingw-w64-python-progress/PKGBUILD
@@ -12,7 +12,7 @@ pkgdesc="Easy to use progress bars for Python (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/verigak/progress"
-license=('ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-setuptools")
 options=('staticlibs' 'strip' '!debug')
diff --git a/mingw-w64-python-ptyprocess/PKGBUILD b/mingw-w64-python-ptyprocess/PKGBUILD
index d21be9e264..fffe1376a8 100644
--- a/mingw-w64-python-ptyprocess/PKGBUILD
+++ b/mingw-w64-python-ptyprocess/PKGBUILD
@@ -12,7 +12,7 @@ pkgdesc="Run a subprocess in a pseudo terminal (mingw-w64)"
 url="https://github.com/pexpect/ptyprocess"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=('ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-setuptools")
 source=(${_realname}-${pkgver}.tar.gz::https://pypi.io/packages/source/p/${_realname}/${_realname}-${pkgver}.tar.gz
diff --git a/mingw-w64-python-pydoe2/PKGBUILD b/mingw-w64-python-pydoe2/PKGBUILD
index b6fcb06544..d9eaeb5dbf 100644
--- a/mingw-w64-python-pydoe2/PKGBUILD
+++ b/mingw-w64-python-pydoe2/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc='An experimental design package for python. (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64')
 url="https://github.com/clicumu/pyDOE2"
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 depends=("${MINGW_PACKAGE_PREFIX}-python-numpy"
          "${MINGW_PACKAGE_PREFIX}-python-scipy")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-setuptools")
diff --git a/mingw-w64-python-pytoolconfig/PKGBUILD b/mingw-w64-python-pytoolconfig/PKGBUILD
index 760510637e..850a8c3205 100644
--- a/mingw-w64-python-pytoolconfig/PKGBUILD
+++ b/mingw-w64-python-pytoolconfig/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Python tool configuration (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/bageljrkhanofemus/pytoolconfig'
-license=('LGPL-3.0-or-later')
+license=('spdx:LGPL-3.0-or-later')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
          "${MINGW_PACKAGE_PREFIX}-python-tomli"
          "${MINGW_PACKAGE_PREFIX}-python-packaging")
diff --git a/mingw-w64-python-requests-oauthlib/PKGBUILD b/mingw-w64-python-requests-oauthlib/PKGBUILD
index 269f24f8ac..32ef56ef5c 100644
--- a/mingw-w64-python-requests-oauthlib/PKGBUILD
+++ b/mingw-w64-python-requests-oauthlib/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='"First-class OAuth library support for Requests (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://pypi.python.org/pypi/requests-oauthlib"
-license=('custom:ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-python-oauthlib"
          "${MINGW_PACKAGE_PREFIX}-python-requests")
 checkdepends=("${MINGW_PACKAGE_PREFIX}-python-mock"
diff --git a/mingw-w64-python-resampy/PKGBUILD b/mingw-w64-python-resampy/PKGBUILD
index b74d6ad9e6..cc0fc53ccf 100644
--- a/mingw-w64-python-resampy/PKGBUILD
+++ b/mingw-w64-python-resampy/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Efficient sample rate conversion in python (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/bmcfee/resampy"
-license=('ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-python"
          "${MINGW_PACKAGE_PREFIX}-python-numba"
          "${MINGW_PACKAGE_PREFIX}-python-numpy")
diff --git a/mingw-w64-python-shellingham/PKGBUILD b/mingw-w64-python-shellingham/PKGBUILD
index 3150e5cde1..553b239da1 100644
--- a/mingw-w64-python-shellingham/PKGBUILD
+++ b/mingw-w64-python-shellingham/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Tool to Detect Surrounding Shell (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/sarugaku/shellingham'
-license=('ISC')
+license=('spdx:ISC')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-build"
              "${MINGW_PACKAGE_PREFIX}-python-installer"
diff --git a/mingw-w64-python-tempita/PKGBUILD b/mingw-w64-python-tempita/PKGBUILD
index 280cb5718f..b77560fa1f 100644
--- a/mingw-w64-python-tempita/PKGBUILD
+++ b/mingw-w64-python-tempita/PKGBUILD
@@ -14,7 +14,7 @@ pkgdesc="A lightweight unicode templating language (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/gjhiggins/tempita'
-license=('custom:MIT')
+license=('spdx:MIT')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-installer")
 options=('staticlibs' 'strip' '!debug')
diff --git a/mingw-w64-python-trove-classifiers/PKGBUILD b/mingw-w64-python-trove-classifiers/PKGBUILD
index 59c915d9d3..9e370085a4 100644
--- a/mingw-w64-python-trove-classifiers/PKGBUILD
+++ b/mingw-w64-python-trove-classifiers/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Canonical source for classifiers on PyPI (pypi.org). (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://github.com/pypa/trove-classifiers'
-license=('Apache-2.0')
+license=('spdx:Apache-2.0')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python-build"
              "${MINGW_PACKAGE_PREFIX}-python-installer"
diff --git a/mingw-w64-python-zope.event/PKGBUILD b/mingw-w64-python-zope.event/PKGBUILD
index 30168ef3a8..8796d614c7 100644
--- a/mingw-w64-python-zope.event/PKGBUILD
+++ b/mingw-w64-python-zope.event/PKGBUILD
@@ -10,7 +10,7 @@ pkgver=4.5.0
 pkgrel=2
 pkgdesc='Very basic event publishing system (mingw-w64)'
 url='https://pypi.python.org/pypi/zope.event'
-license=('ZPL 2.1')
+license=('spdx:ZPL-2.1')
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
diff --git a/mingw-w64-python-zope.interface/PKGBUILD b/mingw-w64-python-zope.interface/PKGBUILD
index 4cdb663d33..7200215a01 100644
--- a/mingw-w64-python-zope.interface/PKGBUILD
+++ b/mingw-w64-python-zope.interface/PKGBUILD
@@ -10,7 +10,7 @@ pkgver=5.2.0
 pkgrel=3
 pkgdesc='Interfaces for Python (mingw-w64)'
 url=' https://github.com/zopefoundation/zope.interface'
-license=('ZPL 2.1')
+license=('spdx:ZPL-2.1')
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 depends=("${MINGW_PACKAGE_PREFIX}-python")
diff --git a/mingw-w64-qpdf/PKGBUILD b/mingw-w64-qpdf/PKGBUILD
index 10028f94ed..a0ca33daf2 100644
--- a/mingw-w64-qpdf/PKGBUILD
+++ b/mingw-w64-qpdf/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="QPDF: A Content-Preserving PDF Transformation System (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/qpdf/qpdf"
-license=('custom:Artistic-2.0' 'Apache')
+license=('spdx:Artistic-2.0' 'Apache')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-python-sphinx")
diff --git a/mingw-w64-scopehal-apps/PKGBUILD b/mingw-w64-scopehal-apps/PKGBUILD
index 5446ae04b7..ad2505c844 100644
--- a/mingw-w64-scopehal-apps/PKGBUILD
+++ b/mingw-w64-scopehal-apps/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="scopehal-apps: applications for libscopehal (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw64' 'ucrt64')
 url="https://github.com/azonenberg/scopehal-apps"
-license=('BSD-3-Clause')
+license=('spdx:BSD-3-Clause')
 groups=("${MINGW_PACKAGE_PREFIX}-eda")
 depends=(
   "${MINGW_PACKAGE_PREFIX}-glm"
diff --git a/mingw-w64-skyr-url/PKGBUILD b/mingw-w64-skyr-url/PKGBUILD
index 0080c99b45..fc77f41cef 100644
--- a/mingw-w64-skyr-url/PKGBUILD
+++ b/mingw-w64-skyr-url/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A C++ library that implements the WhatWG URL specification"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/cpp-netlib/url'
-license=('BSL-1.0')
+license=('spdx:BSL-1.0')
 depends=("${MINGW_PACKAGE_PREFIX}-tl-expected")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-catch"
diff --git a/mingw-w64-stxxl-git/PKGBUILD b/mingw-w64-stxxl-git/PKGBUILD
index 2fc904266d..be1abe525b 100644
--- a/mingw-w64-stxxl-git/PKGBUILD
+++ b/mingw-w64-stxxl-git/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc="Standard Template Library for Extra Large Data Sets (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://stxxl.sourceforge.io/"
-license=('custom:Boost')
+license=('spdx:BSL-1.0')
 makedepends=(
   "${MINGW_PACKAGE_PREFIX}-cc"
   "${MINGW_PACKAGE_PREFIX}-cmake"
diff --git a/mingw-w64-superlu/PKGBUILD b/mingw-w64-superlu/PKGBUILD
index a742698a17..8794867f8a 100644
--- a/mingw-w64-superlu/PKGBUILD
+++ b/mingw-w64-superlu/PKGBUILD
@@ -16,7 +16,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              $( [[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]] || echo "${MINGW_PACKAGE_PREFIX}-gcc-fortran"))
 optdepends=("${MINGW_PACKAGE_PREFIX}-tcl: build & run test suite")
 options=('strip' 'staticlibs')
-license=('3-clause BSD')
+license=('spdx:BSD-3-Clause')
 url='https://portal.nersc.gov/project/sparse/superlu/'
 source=("https://github.com/xiaoyeli/${_realname}/archive/v${pkgver}/${_realname}-${pkgver}.tar.gz"
         'all.tcl'
diff --git a/mingw-w64-superlu_dist/PKGBUILD b/mingw-w64-superlu_dist/PKGBUILD
index e142217de9..fa5ecd5da7 100644
--- a/mingw-w64-superlu_dist/PKGBUILD
+++ b/mingw-w64-superlu_dist/PKGBUILD
@@ -18,7 +18,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-ninja")
 optdepends=("${MINGW_PACKAGE_PREFIX}-tcl: build & run test suite")
 options=('strip' 'staticlibs')
-license=('BSD3')
+license=('spdx:BSD-3-Clause')
 url='https://portal.nersc.gov/project/sparse/superlu/'
 source=("https://github.com/xiaoyeli/${_realname}/archive/v${pkgver}.tar.gz"
         'all.tcl'
diff --git a/mingw-w64-texstudio/PKGBUILD b/mingw-w64-texstudio/PKGBUILD
index 515abda79e..b47cdfc92b 100644
--- a/mingw-w64-texstudio/PKGBUILD
+++ b/mingw-w64-texstudio/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Integrated writing environment for creating LaTeX documents (mingw-w64)
 arch=('any')
 mingw_arch=('mingw64' 'ucrt64' 'clang64')
 url="http://texstudio.sourceforge.net/"
-license=('spdx: GPL-3.0-or-later')
+license=('spdx:GPL-3.0-or-later')
 depends=("${MINGW_PACKAGE_PREFIX}-poppler-qt6"
          "${MINGW_PACKAGE_PREFIX}-quazip-qt6"
          "${MINGW_PACKAGE_PREFIX}-hunspell"
diff --git a/mingw-w64-tiny-dnn/PKGBUILD b/mingw-w64-tiny-dnn/PKGBUILD
index 5003bac467..d818c39049 100644
--- a/mingw-w64-tiny-dnn/PKGBUILD
+++ b/mingw-w64-tiny-dnn/PKGBUILD
@@ -8,7 +8,7 @@ pkgrel=6
 pkgdesc="C++14 implementation of deep learning (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=('BSD3')
+license=('spdx:BSD-3-Clause')
 #depends=("${MINGW_PACKAGE_PREFIX}-tbb")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
diff --git a/mingw-w64-tinyformat/PKGBUILD b/mingw-w64-tinyformat/PKGBUILD
index dfc8609a0a..c1f7344f23 100644
--- a/mingw-w64-tinyformat/PKGBUILD
+++ b/mingw-w64-tinyformat/PKGBUILD
@@ -8,7 +8,7 @@ pkgrel=1
 pkgdesc="A minimal type safe printf() replacement (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
-license=('boost')
+license=('spdx:BSL-1.0')
 url="https://github.com/c42f/tinyformat"
 source=(${_realname}-${pkgver}.tar.gz::"https://github.com/c42f/tinyformat/archive/v${pkgver}.tar.gz")
 sha256sums=('ecba2fbbd3829002a63e141b77b9f1fc30e920962f68466b50c3244652d69391')
diff --git a/mingw-w64-trompeloeil/PKGBUILD b/mingw-w64-trompeloeil/PKGBUILD
index b771063c9c..47a79ad418 100644
--- a/mingw-w64-trompeloeil/PKGBUILD
+++ b/mingw-w64-trompeloeil/PKGBUILD
@@ -11,7 +11,7 @@ mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/rollbear/trompeloeil'
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake")
-license=('Boost')
+license=('spdx:BSL-1.0')
 source=(${_realname}-${pkgver}.tar.gz::https://github.com/rollbear/trompeloeil/archive/v${pkgver}.tar.gz)
 sha256sums=('86a0afa2e97347202a0a883ab43da78c1d4bfff0d6cb93205cfc433d0d9eb9eb')
 
diff --git a/mingw-w64-uriparser/PKGBUILD b/mingw-w64-uriparser/PKGBUILD
index 66dd7eee10..fd1ed20164 100644
--- a/mingw-w64-uriparser/PKGBUILD
+++ b/mingw-w64-uriparser/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="RFC 3986 URI parsing and processing libary (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://uriparser.github.io/"
-license=('BSD3')
+license=('spdx:BSD-3-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
              "${MINGW_PACKAGE_PREFIX}-cc")
diff --git a/mingw-w64-usrsctp/PKGBUILD b/mingw-w64-usrsctp/PKGBUILD
index 8137272f6c..8e0de5c91c 100644
--- a/mingw-w64-usrsctp/PKGBUILD
+++ b/mingw-w64-usrsctp/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A portable SCTP userland stack (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url='https://github.com/sctplab/usrsctp'
-license=('BSD3')
+license=('spdx:BSD-3-Clause')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-meson"
              "${MINGW_PACKAGE_PREFIX}-pkg-config"
diff --git a/mingw-w64-utf8cpp/PKGBUILD b/mingw-w64-utf8cpp/PKGBUILD
index 21edb5dbce..fe0af2ee01 100644
--- a/mingw-w64-utf8cpp/PKGBUILD
+++ b/mingw-w64-utf8cpp/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="UTF-8 with C++ in a Portable Way (mingw-w64)"
 arch=(any)
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/nemtrif/utfcpp"
-license=(custom:BSL)
+license=('spdx:BSL-1.0')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja")
diff --git a/mingw-w64-vera++/PKGBUILD b/mingw-w64-vera++/PKGBUILD
index 9b25bd5d3f..bbc4bef616 100644
--- a/mingw-w64-vera++/PKGBUILD
+++ b/mingw-w64-vera++/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="A programmable tool for verification, analysis and transformation of C+
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://bitbucket.org/verateam/vera"
-license=('custom:boost')
+license=('spdx:BSL-1.0')
 depends=(${MINGW_PACKAGE_PREFIX}-tcl
          ${MINGW_PACKAGE_PREFIX}-boost
          ${MINGW_PACKAGE_PREFIX}-python)
diff --git a/mingw-w64-vrpn/PKGBUILD b/mingw-w64-vrpn/PKGBUILD
index 3a37490f52..ca7c04e5cd 100644
--- a/mingw-w64-vrpn/PKGBUILD
+++ b/mingw-w64-vrpn/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc="The Virtual-Reality Peripheral Network (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://github.com/vrpn/vrpn/wiki"
-license=("BSL1.0")
+license=('spdx:BSL-1.0')
 depends=("${MINGW_PACKAGE_PREFIX}-hidapi"
          "${MINGW_PACKAGE_PREFIX}-jsoncpp"
          "${MINGW_PACKAGE_PREFIX}-libusb"
diff --git a/mingw-w64-wxPython/PKGBUILD b/mingw-w64-wxPython/PKGBUILD
index 6ebea4d4de..7615a1ab50 100644
--- a/mingw-w64-wxPython/PKGBUILD
+++ b/mingw-w64-wxPython/PKGBUILD
@@ -10,7 +10,7 @@ pkgrel=2
 pkgdesc="A wxWidgets GUI toolkit for Python (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
-license=("custom:wxWindows")
+license=('spdx:wxWindows')
 url="https://www.wxpython.org/"
 depends=("${MINGW_PACKAGE_PREFIX}-python"
          $( [[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]] || echo \
diff --git a/mingw-w64-wxSVG/PKGBUILD b/mingw-w64-wxSVG/PKGBUILD
index 576d86f39a..264dc6e8ea 100644
--- a/mingw-w64-wxSVG/PKGBUILD
+++ b/mingw-w64-wxSVG/PKGBUILD
@@ -10,7 +10,7 @@ pkgdesc="A C++ library to create, manipulate and render SVG files (mingw-w64)"
 arch=(any)
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="https://wxsvg.sourceforge.io/"
-license=("custom:wxWindows")
+license=('spdx:wxWindows')
 provides=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 conflicts=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 replaces=("${MINGW_PACKAGE_PREFIX}-${_realname}")
diff --git a/mingw-w64-wxWidgets3.1/PKGBUILD b/mingw-w64-wxWidgets3.1/PKGBUILD
index 7d18978b21..e30fa89e5f 100644
--- a/mingw-w64-wxWidgets3.1/PKGBUILD
+++ b/mingw-w64-wxWidgets3.1/PKGBUILD
@@ -14,7 +14,7 @@ pkgdesc="A C++ library that lets developers create applications for Windows, Lin
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://wxwidgets.org/"
-license=('custom:wxWindows')
+license=('spdx:wxWindows')
 makedepends=(
   "${MINGW_PACKAGE_PREFIX}-autotools"
   "patch"
diff --git a/mingw-w64-wxwidgets3.2/PKGBUILD b/mingw-w64-wxwidgets3.2/PKGBUILD
index 20d10310b0..56443b44ea 100644
--- a/mingw-w64-wxwidgets3.2/PKGBUILD
+++ b/mingw-w64-wxwidgets3.2/PKGBUILD
@@ -19,7 +19,7 @@ pkgdesc="A C++ library that lets developers create applications for Windows, Lin
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://wxwidgets.org/"
-license=('custom:wxWindows')
+license=('spdx:wxWindows')
 makedepends=(
   "${MINGW_PACKAGE_PREFIX}-autotools"
   "${MINGW_PACKAGE_PREFIX}-libpng"
diff --git a/mingw-w64-yajl/PKGBUILD b/mingw-w64-yajl/PKGBUILD
index 24f3587027..bc1093c4bf 100644
--- a/mingw-w64-yajl/PKGBUILD
+++ b/mingw-w64-yajl/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc='Yet Another JSON Library (mingw-w64)'
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url='https://lloyd.github.io/yajl/'
-license=('ISC')
+license=('spdx:ISC')
 source=("${_realname}-${pkgver}.tar.gz::https://github.com/lloyd/$_realname/archive/refs/tags/${pkgver}.tar.gz"
          '01-fix-compiler.patch'
          '02-fix-tests.patch')
diff --git a/mingw-w64-yosys/PKGBUILD b/mingw-w64-yosys/PKGBUILD
index 059ea611a2..368b246e0f 100644
--- a/mingw-w64-yosys/PKGBUILD
+++ b/mingw-w64-yosys/PKGBUILD
@@ -6,7 +6,7 @@ pkgrel=1
 pkgdesc="A framework for RTL synthesis tools (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64')
-license=("ISC")
+license=('spdx:ISC')
 url="http://www.clifford.at/yosys/"
 groups=("${MINGW_PACKAGE_PREFIX}-eda")
 depends=(
diff --git a/mingw-w64-zimg/PKGBUILD b/mingw-w64-zimg/PKGBUILD
index e3975065dc..ba6bb29265 100644
--- a/mingw-w64-zimg/PKGBUILD
+++ b/mingw-w64-zimg/PKGBUILD
@@ -9,7 +9,7 @@ pkgdesc="Scaling, colorspace conversion, and dithering library (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 url="https://github.com/sekrit-twc/zimg"
-license=("WTFPL")
+license=('spdx:WTFPL')
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-autotools"
              "tar")