diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 04e03f2..08ddd11 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,7 +1,7 @@
 name: Build V2Ray rules dat files
 on:
   schedule:
-    - cron: "30 3 * * *"
+    - cron: "30 3-23/12 * * *"
   push:
     branches:
       - master