diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 5acea66..c05f16b 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -6,6 +6,7 @@ on:
 
 permissions:
   contents: write
+  pull-requests: write
 
 jobs:
   test: