diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2da991a..97fc064 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,6 +5,9 @@ on:
   pull_request: {}
   # allow rebuilding without a push
   workflow_dispatch: {}
+  # pre-build sstate regularly
+  schedule:
+    - cron: '30 2 * * *'
 
 jobs:
   build: