diff --git a/.github/workflows/cooker.yml b/.github/workflows/cooker.yml
index bed9cc90..ff237c31 100644
--- a/.github/workflows/cooker.yml
+++ b/.github/workflows/cooker.yml
@@ -95,6 +95,13 @@ jobs:
       - name: Bulding part 1 - Until the end
         if: steps.cache-cooker.outputs.cache-hit != 'true'
         run: |
+          git submodule init
+          git submodule update
+          sudo add-apt-repository ppa:alexlarsson/flatpak
+          sudo apt-get update
+          sudo apt install flatpak flatpak-builder p7zip-full
+          sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+          sudo flatpak install -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
           sudo flatpak-builder --build-only --user --install --force-clean --repo=local retrodeck-flatpak net.retrodeck.retrodeck.yml
 
       - name: cache-cooker