diff --git a/app/services/compats/check.rb b/app/services/compats/check.rb
index ccd7a59..137f5ab 100644
--- a/app/services/compats/check.rb
+++ b/app/services/compats/check.rb
@@ -185,7 +185,7 @@ def check_with_bundler_github
           ruby_version: @compat.rails_release.compatible_ruby_version.to_s,
           bundler_version: @compat.rails_release.compatible_bundler_version.to_s,
           dependencies: JSON::dump(@compat.dependencies),
-          compat_id: @compat.id
+          compat_id: @compat.id.to_s
         }
 
         # Trigger the workflow dispatch event