diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 8f1a27c..a40b407 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -1,7 +1,7 @@
 name: update-flake-inputs
 on:
   schedule:
-    - cron: '@hourly'
+    - cron: '0 0 * * 0' # runs weekly on Sunday at 00:00
 
 jobs:
   update-lockfile: