diff --git a/.github/workflows/update-flake-lock.yaml b/.github/workflows/update-flake-lock.yaml
index 946f7bb..27169d0 100644
--- a/.github/workflows/update-flake-lock.yaml
+++ b/.github/workflows/update-flake-lock.yaml
@@ -2,7 +2,8 @@ name: update-flake-lock
 on:
   workflow_dispatch: # allows manual triggering
   schedule:
-    - cron: '0 15 1 * *'
+    # At 18:00 on day-of-month 1
+    - cron: '0 18 1 * *'
 
 jobs:
   lockfile: