diff --git a/pkgs/flatpak/testing/gstreamer.json b/pkgs/flatpak/testing/gstreamer.json
index b85fb868..6daf1583 100644
--- a/pkgs/flatpak/testing/gstreamer.json
+++ b/pkgs/flatpak/testing/gstreamer.json
@@ -23,6 +23,7 @@
         "-Dintrospection=enabled",
         "-Ddoc=disabled",
         "-Dgtk_doc=disabled",
+        "-Dgpl=enabled",
 
         "-Dgstreamer:benchmarks=disabled",
         "-Dgstreamer:gobject-cast-checks=disabled",