diff --git a/.github/workflows/push-main.yml b/.github/workflows/push-main.yml
index e8ab6b5..5a1dd5b 100644
--- a/.github/workflows/push-main.yml
+++ b/.github/workflows/push-main.yml
@@ -1,6 +1,9 @@
 name: Push and publish main
 
 on:
+  schedule:
+    # twice a day at midnight and noon
+    - cron: '0 0,12 * * *'
   push:
     branches:
       - main