diff --git a/actionpack/lib/action_dispatch/journey/router.rb b/actionpack/lib/action_dispatch/journey/router.rb
index <HASH>..<HASH> 100644
--- a/actionpack/lib/action_dispatch/journey/router.rb
+++ b/actionpack/lib/action_dispatch/journey/router.rb
@@ -1,4 +1,3 @@
-require 'action_dispatch/journey/core-ext/hash'
 require 'action_dispatch/journey/router/utils'
 require 'action_dispatch/journey/router/strexp'
 require 'action_dispatch/journey/routes'
Remove obsolete Hash extension needed for Ruby <I>.x support

[ci skip]