diff --git a/.github/workflows/build-nightly.yml b/.github/workflows/build-nightly.yml
index 34bb472..7eab513 100644
--- a/.github/workflows/build-nightly.yml
+++ b/.github/workflows/build-nightly.yml
@@ -2,7 +2,7 @@ name: build-nightly
 
 on:
   schedule:
-    - cron:  '0 0 * * *'
+    - cron:  '0 0/12 * * *'
   workflow_dispatch:
   push:
     paths: