diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index c05f16b..f9fc066 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -3,6 +3,8 @@ name: Ruby
 on:
   push:
     branches: [ "main" ]
+  pull_request_target:
+    branches: [ "main" ]
 
 permissions:
   contents: write