diff --git a/.github/workflows/subnets.yml b/.github/workflows/subnets.yml
index 7e6411d..38d8e93 100644
--- a/.github/workflows/subnets.yml
+++ b/.github/workflows/subnets.yml
@@ -3,7 +3,7 @@ name: Update subnets
 on:
   workflow_dispatch:
   schedule:
-    - cron: '0 * * * *'
+    - cron: '0 */12 * * *'
 
 permissions:
   contents: write