diff --git a/.github/workflows/refresh.yml b/.github/workflows/refresh.yml
index d2dc1c084..48180fde0 100644
--- a/.github/workflows/refresh.yml
+++ b/.github/workflows/refresh.yml
@@ -1,6 +1,11 @@
 name: Refresh Non-appservice Images
 
 on:
+  # Images are refreshed at least once every two weeks:
+  schedule:
+  - cron: "0 */336 * * 1" # every 336 hours (14 days) on Mondays
+  
+  # Also enable the custom 'refresh' trigger:
   repository_dispatch:
     types: [refresh]
 
@@ -30,4 +35,4 @@ jobs:
         ./verify-republish-pipeline.sh ${{ github.event.client_payload.targetTag }}
         git push origin "refresh/${{ github.event.client_payload.targetTag }}-refresh" --force
       env:
-        GITHUB_TOKEN: ${{ secrets.PIPELINE_ADMIN }} 
\ No newline at end of file
+        GITHUB_TOKEN: ${{ secrets.PIPELINE_ADMIN }}