diff --git a/.github/workflows/ci_ubuntu_verify_external_installation.yml b/.github/workflows/ci_ubuntu_verify_external_installation.yml
index 62f2dbd..a7ab422 100644
--- a/.github/workflows/ci_ubuntu_verify_external_installation.yml
+++ b/.github/workflows/ci_ubuntu_verify_external_installation.yml
@@ -3,6 +3,8 @@ name: CI ubuntu verify external installation
   push:
     branches:
       - main
+  schedule:
+    - cron: '0 * * * *'
 jobs:
   fetch_installations_externally:
     runs-on: ubuntu-latest