diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 59299abf..0d440a3f 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -6,7 +6,7 @@ on:
   pull_request:
     branches: [ hugo ]
   schedule:
-    - cron: 25 0 * * *
+    - cron: '25 0 * * *'
 
 jobs:
   build: