1 files changed, 5 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb
index 3ed5f1055f..24ebb8fed7 100644
--- a/actionpack/lib/action_dispatch/middleware/cookies.rb
+++ b/actionpack/lib/action_dispatch/middleware/cookies.rb
@@ -115,10 +115,13 @@ module ActionDispatch
         @delete_cookies = {}
         @host = host
         @secure = secure
+        @closed = false
         @cookies = {}
       end
 
-      alias :closed? :frozen?
+      attr_reader :closed
+      alias :closed? :closed
+      def close!; @closed = true end
 
       # Returns the value of the cookie by +name+, or +nil+ if no such cookie exists.
       def [](name)
@@ -327,7 +330,7 @@ module ActionDispatch
       [status, headers, body]
     ensure
       cookie_jar = ActionDispatch::Request.new(env).cookie_jar unless cookie_jar
-      cookie_jar.freeze
+      cookie_jar.close!
     end
   end
 end