diff --git a/.github/workflows/update-hellen-one-reference.yaml b/.github/workflows/update-hellen-one-reference.yaml
index 5acc8db4..b60a19b3 100644
--- a/.github/workflows/update-hellen-one-reference.yaml
+++ b/.github/workflows/update-hellen-one-reference.yaml
@@ -1,6 +1,8 @@
 name: Update hellen-one Reference
 
 on:
+  schedule:
+    - cron: '5 15 * * *' # update hellen reference daily at 3:05 pm
   workflow_dispatch:
 
 jobs: