diff --git a/.github/workflows/cooker-selfhosted.yml b/.github/workflows/cooker-selfhosted.yml
index 38c066ac..a2bc226f 100644
--- a/.github/workflows/cooker-selfhosted.yml
+++ b/.github/workflows/cooker-selfhosted.yml
@@ -39,7 +39,13 @@ jobs:
           git submodule update
           sudo apt install -y flatpak flatpak-builder p7zip-full
           flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
-          flatpak install --user -y org.kde.Sdk//5.15-21.08 org.kde.Platform//5.15-21.08 io.qt.qtwebengine.BaseApp/x86_64/5.15-21.08 org.freedesktop.Sdk.Extension.llvm13 org.freedesktop.Platform.ffmpeg-full/x86_64/21.08 org.freedesktop.Sdk.Extension.dotnet6/x86_64/21.08
+          flatpak install --user -y \
+          org.kde.Sdk//6.3 \
+          org.kde.Platform//6.3 \
+          io.qt.qtwebengine.BaseApp/x86_64/6.3 \
+          org.freedesktop.Sdk.Extension.llvm13 \
+          org.freedesktop.Platform.ffmpeg-full/x86_64/21.08 \
+          org.freedesktop.Sdk.Extension.dotnet6/x86_64/21.08
 
       - name: Build flatpak
         run: |
diff --git a/net.retrodeck.retrodeck.yml b/net.retrodeck.retrodeck.yml
index 8e658528..1fa49179 100644
--- a/net.retrodeck.retrodeck.yml
+++ b/net.retrodeck.retrodeck.yml
@@ -1,18 +1,14 @@
 app-id: net.retrodeck.retrodeck
 runtime: org.kde.Platform
 #runtime-version: 5.15-21.08
-runtime-version:
-  - 5.15-21.08
-  - 6.3                                     # bumped because of pcsx2-qt
+runtime-version: 6.3                                     # bumped because of pcsx2-qt
 sdk: org.kde.Sdk
 sdk-extensions:
   - org.freedesktop.Sdk.Extension.llvm13    # Needed for rpcs3
   - org.freedesktop.Sdk.Extension.dotnet6   # Needed for Ryujinx
 base: io.qt.qtwebengine.BaseApp             # Needed for Yuzu
 #base-version: 5.15-21.08                    # Needed for Yuzu
-base-version:
-  - 5.15-21.08 
-  - 6.3
+base-version: 6.3
 command: retrodeck.sh
 
 finish-args: