diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fe8a63b6..029fdd9e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,7 +1,12 @@
 name: CI
 
-on: [push]
-
+on:
+  # Run on pushes and also once per day (in case deps change under us)
+  - push
+  - schedule:
+      # Note: * is a special character in YAML so we have to quote the str.
+      - cron: '0 4 * * *'
+        
 jobs:
   check: