diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 217fff4..8e035b9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -72,7 +72,7 @@ flatpak:
         # Create a flatpak bundle
         - flatpak build-bundle repo ${BUNDLE} org.gnome.Podcasts
         # Run the tests
-        - flatpak-builder --run app org.gnome.Podcasts.json cargo test -- --test-threads=1
+        - flatpak-builder --run --env=RUSTFLAGS="--cfg rayon_unstable" app org.gnome.Podcasts.json cargo test -- --test-threads=1
         # - flatpak-builder --run app org.gnome.Podcasts.json cargo test -- --test-threads=1 --ignored
 
     artifacts: