diff --git a/.github/workflows/trigger_scheduled_test.yml b/.github/workflows/trigger_scheduled_test.yml
new file mode 100644
index 0000000..55cd1a9
--- /dev/null
+++ b/.github/workflows/trigger_scheduled_test.yml
@@ -0,0 +1,21 @@
+name: Trigger a scheduled test
+on:
+  workflow_dispatch: # For occasional manual triggering e.g. for debugging
+  schedule:
+    - cron: "0 3 * * 0" # Every Sunday at 3 AM
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger testing workflow
+        if: github.repository_owner == 'neuroinformatics-unit' # don't trigger scheduled run from forks
+        uses: actions/github-script@v6
+        with:
+          script: |
+            github.rest.actions.createWorkflowDispatch({
+              owner: context.repo.neuroinformatics-unit,
+              repo: context.repo.python-cookiecutter,
+              workflow_id: 'test.yml',
+              ref: 'main',
+            })