diff --git a/lib/rack/version.rb b/lib/rack/version.rb
index e2deadab2..8817699e1 100644
--- a/lib/rack/version.rb
+++ b/lib/rack/version.rb
@@ -25,7 +25,7 @@ def self.version
     VERSION
   end
 
-  RELEASE = "3.0.9"
+  RELEASE = "3.0.9.1"
 
   # Return the Rack release as a dotted string.
   def self.release