diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 13f5defc..896229cb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -87,7 +87,7 @@ flatpak:
   variables:
     APP_ID: org.gnome.Geary.Devel
     FLATPAK_MODULE: geary
-    MANIFEST_PATH: org.gnome.Geary.yaml
+    MANIFEST_PATH: org.gnome.Geary.json
     RUNTIME_REPO: 'https://nightly.gnome.org/gnome-nightly.flatpakrepo'
     TEST_RUN_ARGS: $TEST_ARGS
     BUNDLE: geary-dev.flatpak