diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4e9fe2e8a..9ebd17f4d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,11 +1,13 @@
 on:
   schedule:
-  - cron: "0 5 * * 0"
+  - cron: "0 5 1 * *"
+  workflow_dispatch:
 
 jobs:
   contrib-readme-job:
     runs-on: ubuntu-latest
     name: A job to automate contrib in readme
+    if: ${{ github.repository_owner == 'pypsa-meets-earth' && github.ref == 'refs/heads/main'}}
     steps:
     - name: Contribute List
       uses: akhilmhdh/contributors-readme-action@v2.3.10