diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fa5583a..263c35e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,6 +2,7 @@ name: CI
 on:
   push: {branches: [main]}
   pull_request_target:
+  schedule: [{cron: '0 11 * * 7'}]  # M H d m w (Sun 11:00)
 jobs:
   setup:
     environment: ${{ github.event_name == 'pull_request_target' && !contains('OWNER,MEMBER,COLLABORATOR', github.event.pull_request.author_association) && 'external' || 'internal' }}
@@ -78,7 +79,7 @@ jobs:
     steps:
     - run: echo success
   teardown:
-    environment: ${{ github.event_name == 'pull_request_target' && !contains('OWNER,MEMBER,COLLABORATOR', github.event.pull_request.author_association) && 'external' || 'internal' }}
+    environment: internal
     needs: build-test-push
     if: always()
     runs-on: ubuntu-latest