diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 5000f36f..9a096f4c 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -1,6 +1,8 @@
 name: update
 on:
   workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *'
 jobs:
   main:
     runs-on: ubuntu-latest