diff --git a/deployment/flatpak/io.github.Soundux.yml b/deployment/flatpak/io.github.Soundux.yml
index ab6ef67..872dc54 100644
--- a/deployment/flatpak/io.github.Soundux.yml
+++ b/deployment/flatpak/io.github.Soundux.yml
@@ -12,11 +12,28 @@ finish-args:
   - --filesystem=xdg-run/pipewire-0
 modules:
   - "shared-modules/libappindicator/libappindicator-gtk3-introspection-12.10.json"
+  - name: libwnck
+    buildsystem: meson
+    config-opts:
+      - "-Dgtk_doc=false"
+    cleanup:
+      - "/include"
+      - "/lib/pkgconfig"
+      - "/bin"
+    sources:
+      - type: git
+        url: https://gitlab.gnome.org/GNOME/libwnck.git
+        tag: "40.0"
+        commit: "d161ed31914711b97a1c6ebef0558d80ce51113b"
   - name: soundux
     buildsystem: cmake-ninja
     config-opts:
       - -DUSE_FLATPAK=ON
       - -DCMAKE_BUILD_TYPE=Release
+    post-install:
+      - "install -Dm 644 -t /app/share/metainfo deployment/appstream/io.github.Soundux.metainfo.xml"
+      - "install -Dm 644 -t /app/share/applications deployment/appstream/io.github.Soundux.desktop"
+      - "install -Dm 644 deployment/flatpak/icons/io.github.Soundux-256.png /app/share/icons/hicolor/256x256/apps/io.github.Soundux.png"
     sources:
       - type: git
         url: https://github.com/Soundux/Soundux.git