diff --git a/.github/workflows/flatpak-testing.yml b/.github/workflows/flatpak-testing.yml
index 382ecca0..10372eed 100644
--- a/.github/workflows/flatpak-testing.yml
+++ b/.github/workflows/flatpak-testing.yml
@@ -18,4 +18,4 @@ jobs:
       with:
         bundle: com.github.rafostar.Clapper.flatpak
         manifest-path: pkgs/flatpak/com.github.rafostar.Clapper-testing.json
-        cache-key: flatpak-builder-${{ github.sha }}-testing
+        cache-key: flatpak-builder-${{ github.sha }}-testing-${{ github.run_number }}