diff --git a/pkgs/flatpak/com.github.rafostar.Clapper-testing.json b/pkgs/flatpak/com.github.rafostar.Clapper-testing.json
index 6fbba79a..9424ac3b 100644
--- a/pkgs/flatpak/com.github.rafostar.Clapper-testing.json
+++ b/pkgs/flatpak/com.github.rafostar.Clapper-testing.json
@@ -21,6 +21,8 @@
     ],
     "modules": [
         "flathub/shared-modules/gudev/gudev.json",
+        "flathub/lib/libsass.json",
+        "flathub/lib/sassc.json",
         "flathub/lib/liba52.json",
         "flathub/lib/libmpeg2.json",
         "flathub/lib/libdv.json",