diff --git a/.github/workflows/sim_tests.yaml b/.github/workflows/sim_tests.yaml
index b33a11265a..772c562a00 100644
--- a/.github/workflows/sim_tests.yaml
+++ b/.github/workflows/sim_tests.yaml
@@ -8,6 +8,7 @@ jobs:
     name: build container
     runs-on: ubuntu-16.04
     timeout-minutes: 50
+    if: github.event_name == 'schedule' && github.repository == 'commaai/openpilot'
     steps:
     - uses: actions/checkout@v2
       with: