diff --git a/mingw-w64-ghdl/PKGBUILD b/mingw-w64-ghdl/PKGBUILD
index 9ba5515904..2422d0e076 100644
--- a/mingw-w64-ghdl/PKGBUILD
+++ b/mingw-w64-ghdl/PKGBUILD
@@ -5,7 +5,7 @@ pkgname=(
   "${MINGW_PACKAGE_PREFIX}-${_realname}-mcode"
 )
 pkgver=5.1.1
-pkgrel=1
+pkgrel=2
 pkgdesc='GHDL: the open-source analyzer, compiler, simulator and (experimental) synthesizer for VHDL'
 arch=('any')
 mingw_arch=('mingw64' 'ucrt64')
@@ -24,8 +24,15 @@ makedepends=(
 )
 checkdepends=("${MINGW_PACKAGE_PREFIX}-python-pytest")
 options=(!emptydirs)
-source=("https://github.com/ghdl/ghdl/archive/v${pkgver}/${_realname}-${pkgver}.tar.gz")
-sha256sums=('00cd58ec8f25e2532465aabc8705f43071f20dc1d13e03fd9dc235523186fca9')
+source=("https://github.com/ghdl/ghdl/archive/v${pkgver}/${_realname}-${pkgver}.tar.gz"
+        001-support-llvm-21.patch::https://github.com/ghdl/ghdl/commit/560a822c.patch)
+sha256sums=('00cd58ec8f25e2532465aabc8705f43071f20dc1d13e03fd9dc235523186fca9'
+            '0228cc3694dc6438419073e94bdca7f4dc0334d23f2428e3aeb1171db1763ef5')
+
+prepare() {
+  cd ${_realname}-${pkgver}
+  patch -p1 -i "${srcdir}"/001-support-llvm-21.patch
+}
 
 build() {
   echo "Building ghdl-llvm..."