diff --git a/lib/bundled_gems.rb b/lib/bundled_gems.rb
index f60c53bd48..6b8d7112c1 100644
--- a/lib/bundled_gems.rb
+++ b/lib/bundled_gems.rb
@@ -21,6 +21,7 @@ module Gem::BUNDLED_GEMS
     "csv" => "3.4.0",
     "base64" => "3.4.0",
     "bigdecimal" => "3.4.0",
+    "racc" => "3.4.0",
   }.freeze
 
   EXACT = {