diff --git a/.github/workflows/build_flatpak.yml b/.github/workflows/build_flatpak.yml
index bcefd772..1a70031b 100644
--- a/.github/workflows/build_flatpak.yml
+++ b/.github/workflows/build_flatpak.yml
@@ -17,7 +17,7 @@ jobs:
         bundle: bottles.flatpak
         manifest-path: build-aux/com.usebottles.bottles.Devel.json
         cache-key: flatpak-builder-${{ github.sha }}
-    - name: Test 32-bit media codecs
+    - name: Test multiarch runtime
       run: |
         curl -fL https://deb.debian.org/debian/pool/main/g/gstreamer1.0/gstreamer1.0-tools_1.26.2-2_i386.deb -o /tmp/gstreamer-tools-i386.deb
         echo 'cca853f66856ec889891e3d509786c3fd7169469a5c92c7751851e53b2b9fa3c  /tmp/gstreamer-tools-i386.deb' | sha256sum -c -
@@ -25,7 +25,44 @@ jobs:
         cd /tmp/gstreamer-tools-i386
         ar x /tmp/gstreamer-tools-i386.deb data.tar.xz
         tar -xf data.tar.xz
+        curl -fL https://github.com/bottlesdevs/wine/releases/download/soda-11.0-8/soda-11.0-8-x86_64.tar.xz -o /tmp/soda.tar.xz
+        echo 'd764aa6697f06fffb4f883930d265f45546381dfc10da17e419ac3ea0b0b8041  /tmp/soda.tar.xz' | sha256sum -c -
+        mkdir /tmp/soda
+        tar -xJf /tmp/soda.tar.xz -C /tmp/soda
+        flatpak remote-add --user --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo
+        install_ref() {
+          attempts=0
+          until flatpak install --user --noninteractive flathub "$1"; do
+            attempts=$((attempts + 1))
+            test "$attempts" -lt 5 || return 1
+            sleep $((attempts * 5))
+          done
+        }
+        install_ref org.freedesktop.Platform.Compat.i386//26.08
+        install_ref org.freedesktop.Platform.codecs_extra.i386//26.08-extra
         flatpak install --user --noninteractive "$GITHUB_WORKSPACE/bottles.flatpak"
+        flatpak run --user --command=sh com.usebottles.bottles.Devel -ec '
+          grep -Fx /app/lib32 /app/etc/ld.so.conf
+          grep -Fx /app/lib/i386-linux-gnu/codecs-extra/lib /app/etc/ld.so.conf
+          grep -Fx /app/lib/i386-linux-gnu /app/etc/ld.so.conf
+          test -r /app/lib/i386-linux-gnu/libc.so.6
+          test -d /app/lib/i386-linux-gnu/dri/intel-vaapi-driver
+          test -d /app/i386/nvidia-vaapi-driver
+          gst-inspect-1.0 avdec_wmv3
+        '
+        flatpak run --user \
+          --filesystem=/tmp/soda:ro \
+          --command=sh \
+          com.usebottles.bottles.Devel -ec '
+            export WINEDEBUG=-all
+            export WINEPREFIX=/tmp/soda-prefix
+            runner=/tmp/soda/soda-11.0-8-x86_64/bin/wine
+            wineserver=/tmp/soda/soda-11.0-8-x86_64/bin/wineserver
+            timeout 120 "$runner" wineboot -u
+            timeout 30 "$runner" "$WINEPREFIX/drive_c/windows/system32/cmd.exe" /c exit
+            timeout 30 "$runner" "$WINEPREFIX/drive_c/windows/syswow64/cmd.exe" /c exit
+            "$wineserver" -k
+          '
         flatpak run --user \
           --filesystem=/tmp/gstreamer-tools-i386:ro \
           --command=/tmp/gstreamer-tools-i386/usr/bin/gst-inspect-1.0 \
diff --git a/build-aux/com.usebottles.bottles.Devel.json b/build-aux/com.usebottles.bottles.Devel.json
index 10c19b9f..5aec63d9 100644
--- a/build-aux/com.usebottles.bottles.Devel.json
+++ b/build-aux/com.usebottles.bottles.Devel.json
@@ -3,8 +3,11 @@
   "sdk": "org.gnome.Sdk",
   "runtime": "org.gnome.Platform",
   "base": "org.winehq.Wine",
-  "base-version": "stable-25.08",
-  "runtime-version": "49",
+  "base-version": "stable-26.08",
+  "runtime-version": "50",
+  "x-gl-version": "1.4",
+  "x-gl-versions": "26.08;26.08-extra;1.4",
+  "x-gl-merge-dirs": "vulkan/icd.d;glvnd/egl_vendor.d;egl/egl_external_platform.d;OpenCL/vendors;lib/dri;lib/d3d;lib/gbm;vulkan/explicit_layer.d;vulkan/implicit_layer.d;vdpau",
   "command": "bottles",
   "finish-args": [
     "--allow=devel",
@@ -24,27 +27,69 @@
     "--system-talk-name=org.freedesktop.UDisks2",
     "--env=LD_LIBRARY_PATH=/usr/lib/extensions/vulkan/gamescope/lib:/app/lib/i386-linux-gnu/codecs-extra/lib:/app/lib:/app/lib/i386-linux-gnu",
     "--env=PATH=/app/bin:/app/utils/bin:/usr/bin:/usr/lib/extensions/vulkan/MangoHud/bin/:/usr/bin:/usr/lib/extensions/vulkan/OBSVkCapture/bin/:/usr/lib/extensions/vulkan/gamescope/bin/",
-    "--env=GST_PLUGIN_SYSTEM_PATH=/app/lib/gstreamer-1.0:/app/lib/i386-linux-gnu/gstreamer-1.0:/usr/lib/x86_64-linux-gnu/gstreamer-1.0:/usr/lib/i386-linux-gnu/gstreamer-1.0",
+    "--env=GST_PLUGIN_SYSTEM_PATH=/app/lib/gstreamer-1.0:/app/lib32/gstreamer-1.0:/app/lib/i386-linux-gnu/codecs-extra/lib/gstreamer-1.0:/app/lib/i386-linux-gnu/gstreamer-1.0:/usr/lib/extensions/gstreamer-1.0:/usr/lib/x86_64-linux-gnu/codecs-extra/lib/gstreamer-1.0:/usr/lib/i386-linux-gnu/codecs-extra/lib/gstreamer-1.0:/usr/lib/x86_64-linux-gnu/gstreamer-1.0:/usr/lib/i386-linux-gnu/gstreamer-1.0",
     "--require-version=1.1.2"
   ],
   "inherit-extensions": [
-    "org.freedesktop.Platform.GL32",
     "org.winehq.Wine.gecko",
     "org.winehq.Wine.mono"
   ],
   "add-extensions": {
     "org.freedesktop.Platform.Compat.i386": {
       "directory": "lib/i386-linux-gnu",
-      "version": "25.08"
+      "version": "26.08"
     },
     "org.freedesktop.Platform.Compat.i386.Debug": {
       "directory": "lib/debug/lib/i386-linux-gnu",
-      "version": "25.08",
+      "version": "26.08",
       "no-autodownload": true
     },
+    "org.freedesktop.Platform.GL32": {
+      "directory": "lib/i386-linux-gnu/GL",
+      "version": "1.4",
+      "versions": "26.08;26.08-extra;1.4",
+      "subdirectories": true,
+      "no-autodownload": true,
+      "autodelete": false,
+      "add-ld-path": "lib",
+      "merge-dirs": "vulkan/icd.d;glvnd/egl_vendor.d;egl/egl_external_platform.d;OpenCL/vendors;lib/dri;lib/d3d;lib/gbm;vulkan/explicit_layer.d;vulkan/implicit_layer.d;vdpau",
+      "download-if": "active-gl-driver",
+      "enable-if": "active-gl-driver",
+      "autoprune-unless": "active-gl-driver"
+    },
+    "org.freedesktop.Platform.GL32.Debug": {
+      "directory": "lib/debug/lib/i386-linux-gnu/GL",
+      "version": "1.4",
+      "versions": "26.08;26.08-extra;1.4",
+      "subdirectories": true,
+      "no-autodownload": true,
+      "merge-dirs": "vulkan/icd.d;glvnd/egl_vendor.d;egl/egl_external_platform.d;OpenCL/vendors;lib/dri;lib/d3d;lib/gbm;vulkan/explicit_layer.d;vulkan/implicit_layer.d;vdpau",
+      "enable-if": "active-gl-driver",
+      "autoprune-unless": "active-gl-driver"
+    },
+    "org.freedesktop.Platform.VAAPI.Intel.i386": {
+      "directory": "lib/i386-linux-gnu/dri/intel-vaapi-driver",
+      "version": "26.08",
+      "versions": "26.08",
+      "autodelete": false,
+      "no-autodownload": true,
+      "add-ld-path": "lib",
+      "download-if": "have-intel-gpu",
+      "autoprune-unless": "have-intel-gpu"
+    },
+    "org.freedesktop.Platform.VAAPI.nvidia.i386": {
+      "directory": "i386/nvidia-vaapi-driver",
+      "version": "26.08",
+      "versions": "26.08",
+      "autodelete": false,
+      "no-autodownload": true,
+      "add-ld-path": "lib",
+      "download-if": "have-kernel-module-nvidia",
+      "autoprune-unless": "have-kernel-module-nvidia"
+    },
     "org.freedesktop.Platform.codecs_extra.i386": {
       "directory": "lib/i386-linux-gnu/codecs-extra",
-      "version": "25.08-extra",
+      "version": "26.08-extra",
       "autodelete": false,
       "add-ld-path": "lib"
     },
@@ -344,6 +389,26 @@
         }
       ]
     },
+    {
+      "name": "bundle-setup",
+      "buildsystem": "simple",
+      "build-commands": [
+        "install -Dm644 ld.so.conf -t /app/etc",
+        "mkdir -p /app/lib/i386-linux-gnu",
+        "mkdir -p /app/lib/debug/lib/i386-linux-gnu",
+        "mkdir -p /app/lib/i386-linux-gnu/GL",
+        "mkdir -p /app/lib/debug/lib/i386-linux-gnu/GL",
+        "mkdir -p /app/lib/i386-linux-gnu/dri/intel-vaapi-driver",
+        "mkdir -p /app/i386/nvidia-vaapi-driver",
+        "mkdir -p /app/lib/i386-linux-gnu/codecs-extra"
+      ],
+      "sources": [
+        {
+          "type": "file",
+          "path": "ld.so.conf"
+        }
+      ]
+    },
     {
       "name": "bottles",
       "builddir": true,
diff --git a/build-aux/ld.so.conf b/build-aux/ld.so.conf
new file mode 100644
index 00000000..9cb24dcf
--- /dev/null
+++ b/build-aux/ld.so.conf
@@ -0,0 +1,3 @@
+/app/lib32
+/app/lib/i386-linux-gnu/codecs-extra/lib
+/app/lib/i386-linux-gnu