diff --git a/mingw-w64-gst-plugins-bad/PKGBUILD b/mingw-w64-gst-plugins-bad/PKGBUILD
index b16b653eb0..7ad4579e33 100644
--- a/mingw-w64-gst-plugins-bad/PKGBUILD
+++ b/mingw-w64-gst-plugins-bad/PKGBUILD
@@ -6,7 +6,7 @@ _realname=gst-plugins-bad
 pkgbase=mingw-w64-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-gst-plugins-bad-libs" "${MINGW_PACKAGE_PREFIX}-gst-plugins-bad")
 pkgver=1.18.4
-pkgrel=10
+pkgrel=11
 pkgdesc="GStreamer Multimedia Framework Bad Plugins (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64')
@@ -18,7 +18,7 @@ makedepends=(
   "${MINGW_PACKAGE_PREFIX}-meson"
   "${MINGW_PACKAGE_PREFIX}-ninja"
   "${MINGW_PACKAGE_PREFIX}-shaderc"
-  "${MINGW_PACKAGE_PREFIX}-vulkan-headers"
+  "${MINGW_PACKAGE_PREFIX}-vulkan-loader"
   "${MINGW_PACKAGE_PREFIX}-gtk-doc"
   "${MINGW_PACKAGE_PREFIX}-aom"
   "${MINGW_PACKAGE_PREFIX}-bzip2"
@@ -53,7 +53,6 @@ makedepends=(
   "${MINGW_PACKAGE_PREFIX}-libmpcdec"
   "${MINGW_PACKAGE_PREFIX}-nettle"
   "${MINGW_PACKAGE_PREFIX}-openal"
-  "${MINGW_PACKAGE_PREFIX}-opencv"
   "${MINGW_PACKAGE_PREFIX}-openexr"
   "${MINGW_PACKAGE_PREFIX}-openh264"
   "${MINGW_PACKAGE_PREFIX}-openjpeg2"
@@ -68,7 +67,7 @@ makedepends=(
   "${MINGW_PACKAGE_PREFIX}-vo-amrwbenc"
   "${MINGW_PACKAGE_PREFIX}-webrtc-audio-processing"
   "${MINGW_PACKAGE_PREFIX}-x265"
-  "${MINGW_PACKAGE_PREFIX}-zbar"
+  $([[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]] || echo "${MINGW_PACKAGE_PREFIX}-zbar" "${MINGW_PACKAGE_PREFIX}-opencv")
 )
 
 source=(${url}/src/${_realname}/${_realname}-${pkgver}.tar.xz
@@ -93,6 +92,14 @@ build() {
   [[ -d "${srcdir}/build-${MINGW_CHOST}" ]] && rm -rf "${srcdir}/build-${MINGW_CHOST}"
   mkdir -p "${srcdir}/build-${MINGW_CHOST}" && cd "${srcdir}/build-${MINGW_CHOST}"
 
+  declare -a extra_config
+  if [[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]]; then
+    # Missing deps
+    extra_config+=("-Dopencv=disabled" "-Dzbar=disabled")
+    # FIXME: broken build
+    extra_config+=("-Dd3d11=disabled")
+  fi
+
   MSYS2_ARG_CONV_EXCL="--prefix=" \
   ${MINGW_PREFIX}/bin/meson.exe \
     --prefix="${MINGW_PREFIX}" \
@@ -143,6 +150,7 @@ build() {
     -Davtp=disabled \
     -Dsvthevcenc=disabled \
     -Dzxing=disabled \
+    "${extra_config[@]}" \
     ../${_realname}-${pkgver}
 
   ${MINGW_PREFIX}/bin/ninja.exe
@@ -163,7 +171,10 @@ package_gst-plugins-bad-libs() {
   mkdir -p _plugins/lib
   mkdir -p _plugins/bin
   mv "${pkgdir}${MINGW_PREFIX}/lib/gstreamer-1.0" _plugins/lib
-  mv "${pkgdir}${MINGW_PREFIX}/bin/libgstopencv-1.0-0.dll"  _plugins/bin
+
+  if [[ ${MINGW_PACKAGE_PREFIX} != *-clang-* ]]; then
+    mv "${pkgdir}${MINGW_PREFIX}/bin/libgstopencv-1.0-0.dll"  _plugins/bin
+  fi
 }
 
 package_gst-plugins-bad() {
@@ -202,7 +213,6 @@ package_gst-plugins-bad() {
     "${MINGW_PACKAGE_PREFIX}-libmpcdec"
     "${MINGW_PACKAGE_PREFIX}-nettle"
     "${MINGW_PACKAGE_PREFIX}-openal"
-    "${MINGW_PACKAGE_PREFIX}-opencv"
     "${MINGW_PACKAGE_PREFIX}-openexr"
     "${MINGW_PACKAGE_PREFIX}-openh264"
     "${MINGW_PACKAGE_PREFIX}-openjpeg2"
@@ -217,7 +227,7 @@ package_gst-plugins-bad() {
     "${MINGW_PACKAGE_PREFIX}-vo-amrwbenc"
     "${MINGW_PACKAGE_PREFIX}-webrtc-audio-processing"
     "${MINGW_PACKAGE_PREFIX}-x265"
-    "${MINGW_PACKAGE_PREFIX}-zbar"
+    $([[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]] || echo "${MINGW_PACKAGE_PREFIX}-zbar" "${MINGW_PACKAGE_PREFIX}-opencv")
   )
   cd "${srcdir}/build-${MINGW_CHOST}"
 
diff --git a/mingw-w64-gtk4/3887.patch b/mingw-w64-gtk4/3887.patch
new file mode 100644
index 0000000000..857c0b525f
--- /dev/null
+++ b/mingw-w64-gtk4/3887.patch
@@ -0,0 +1,46 @@
+From b3bb216229146b6dcc522b9b7e2d1f2435cacf71 Mon Sep 17 00:00:00 2001
+From: Christoph Reiter <reiter.christoph@gmail.com>
+Date: Thu, 26 Aug 2021 05:14:18 +0200
+Subject: [PATCH] build: fix implicit-fallthrough errors with clang
+
+The clang build fails due to -Werror=implicit-fallthrough being
+on by default and some fallthrough cases not being marked as such.
+
+Use G_GNUC_FALLTHROUGH or duplicate the code in those cases.
+---
+ gtk/gtkimcontextime.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/gtk/gtkimcontextime.c b/gtk/gtkimcontextime.c
+index c8378c836e..102eccec38 100644
+--- a/gtk/gtkimcontextime.c
++++ b/gtk/gtkimcontextime.c
+@@ -667,6 +667,7 @@ gtk_im_context_ime_focus_in (GtkIMContext *context)
+   switch (context_ime->priv->focus_behavior)
+     {
+       case GTK_WIN32_IME_FOCUS_BEHAVIOR_COMMIT:
++        G_GNUC_FALLTHROUGH;
+       case GTK_WIN32_IME_FOCUS_BEHAVIOR_DISCARD:
+         gtk_im_context_ime_reset (context);
+         break;
+@@ -724,7 +725,7 @@ gtk_im_context_ime_focus_out (GtkIMContext *context)
+             context_ime->priv->pretend_empty_preedit = FALSE;
+             g_free (utf8str);
+           }
+-        /* fallthrough */
++        G_GNUC_FALLTHROUGH;
+       case GTK_WIN32_IME_FOCUS_BEHAVIOR_DISCARD:
+         gtk_im_context_ime_reset (context);
+ 
+@@ -1054,7 +1055,7 @@ gtk_im_context_ime_message_filter (GdkWin32Display *display,
+         default:
+           break;
+         }
+-
++      break;
+     default:
+       break;
+     }
+-- 
+GitLab
+
diff --git a/mingw-w64-gtk4/PKGBUILD b/mingw-w64-gtk4/PKGBUILD
index ec19faaa77..799d574dee 100644
--- a/mingw-w64-gtk4/PKGBUILD
+++ b/mingw-w64-gtk4/PKGBUILD
@@ -4,7 +4,7 @@ _realname=gtk4
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgver=4.4.0
-pkgrel=1
+pkgrel=2
 pkgdesc="GObject-based multi-platform GUI toolkit (v4) (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64')
@@ -28,14 +28,17 @@ depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs"
          "${MINGW_PACKAGE_PREFIX}-gtk-update-icon-cache"
          "${MINGW_PACKAGE_PREFIX}-gst-plugins-bad-libs"
          "${MINGW_PACKAGE_PREFIX}-ffmpeg"
-         "${MINGW_PACKAGE_PREFIX}-vulkan-loader"
          "${MINGW_PACKAGE_PREFIX}-shared-mime-info")
-source=("https://download.gnome.org/sources/gtk/${pkgver:0:3}/gtk-${pkgver}.tar.xz")
-sha256sums=('e0a1508f441686c3a20dfec48af533b19a4b2e017c18eaee31dccdb7d292505b')
+source=("https://download.gnome.org/sources/gtk/${pkgver:0:3}/gtk-${pkgver}.tar.xz"
+        "3887.patch")
+sha256sums=('e0a1508f441686c3a20dfec48af533b19a4b2e017c18eaee31dccdb7d292505b'
+            '70efcdf6affc8efa7a4e8c03054d46eced3b3c4a401a43da57dc0157e9b71899')
 
 prepare() {
   cd "${srcdir}/gtk-${pkgver}"
 
+  # https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/3887
+  patch -p1 -i "${srcdir}"/3887.patch
 }
 
 build() {