diff --git a/.github/workflows/update_patterns.yml b/.github/workflows/update_patterns.yml
index 878e542..8ac1725 100644
--- a/.github/workflows/update_patterns.yml
+++ b/.github/workflows/update_patterns.yml
@@ -1,5 +1,9 @@
 name: Update patterns
 
+permissions:
+  contents: read
+  pull-requests: write
+  
 on:
   schedule:
     - cron: '0 0 * * *'  # Run daily at midnight UTC