diff --git a/mingw-w64-qt5-base/PKGBUILD b/mingw-w64-qt5-base/PKGBUILD
index 1ea989e394..f16feafc36 100644
--- a/mingw-w64-qt5-base/PKGBUILD
+++ b/mingw-w64-qt5-base/PKGBUILD
@@ -12,9 +12,9 @@ pkgbase="mingw-w64-${_realname}"
 pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}"
          $([[ ${CARCH} == i686 ]] || echo "${MINGW_PACKAGE_PREFIX}-${_realname}-debug"))
 _qtver=5.15.12
-pkgver=${_qtver}+kde+r144
+pkgver=${_qtver}+kde+r147
 pkgrel=1
-_commit=9e450254296be0a8fd4e6da10d116862a0fce82e
+_commit=8907dedc858cc344d770a2e826d6acc516429540
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
 pkgdesc="A cross-platform application and UI framework (mingw-w64)"
@@ -37,6 +37,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-vulkan"
              "${MINGW_PACKAGE_PREFIX}-zlib"
              "${MINGW_PACKAGE_PREFIX}-zstd"
+             $([[ ${CARCH} == i686 ]] || echo "${MINGW_PACKAGE_PREFIX}-firebird")
              "${MINGW_PACKAGE_PREFIX}-libmariadbclient"
              "${MINGW_PACKAGE_PREFIX}-postgresql"
              "git"
@@ -200,6 +201,10 @@ build() {
     _extra_config+=("-debug")
   fi
 
+  if [[ ${CARCH} != i686 ]]; then
+    _extra_config+=("-plugin-sql-ibase")
+  fi
+
   ../${_pkgfn}/configure.bat \
     -prefix ${MINGW_PREFIX} \
     -datadir ${MINGW_PREFIX}/share/qt5 \
@@ -255,8 +260,11 @@ package_qt5-base() {
            "${MINGW_PACKAGE_PREFIX}-vulkan"
            "${MINGW_PACKAGE_PREFIX}-zlib"
            "${MINGW_PACKAGE_PREFIX}-zstd")
-  optdepends=("${MINGW_PACKAGE_PREFIX}-libmariadbclient"
-              "${MINGW_PACKAGE_PREFIX}-postgresql")
+  optdepends=("${MINGW_PACKAGE_PREFIX}-libmariadbclient: MySQL/MariaDB driver"
+              "${MINGW_PACKAGE_PREFIX}-postgresql: PostgreSQL driver")
+  if [[ ${CARCH} != i686 ]]; then
+    optdepends+=("${MINGW_PACKAGE_PREFIX}-firebird: Firebird/iBase driver")
+  fi
   groups=($([[ ${CARCH} == i686 ]] || echo "${MINGW_PACKAGE_PREFIX}-qt5"))
 
   cd build-${MSYSTEM}