diff --git a/lib/rack.rb b/lib/rack.rb
index 9b44d707b..893d89226 100644
--- a/lib/rack.rb
+++ b/lib/rack.rb
@@ -18,7 +18,7 @@ def self.version
     VERSION.join(".")
   end
 
-  RELEASE = "2.0.9.3"
+  RELEASE = "2.0.9.4"
 
   # Return the Rack release as a dotted string.
   def self.release