diff --git a/lib/sidekiq/web.rb b/lib/sidekiq/web.rb
index 71c541b4..bf2b8406 100644
--- a/lib/sidekiq/web.rb
+++ b/lib/sidekiq/web.rb
@@ -262,3 +262,16 @@ module Sidekiq
     end
   end
 end
+
+if defined?(::ActionDispatch::Request::Session) &&
+    !::ActionDispatch::Request::Session.respond_to?(:each)
+  # mperham/sidekiq#2460
+  # Rack apps can't reuse the Rails session store without
+  # this monkeypatch
+  class ActionDispatch::Request::Session
+    def each(&block)
+      hash = self.to_hash
+      hash.each(&block)
+    end
+  end
+end
diff --git a/myapp/config/initializers/session_store.rb b/myapp/config/initializers/session_store.rb
index 12441f01..efa55838 100644
--- a/myapp/config/initializers/session_store.rb
+++ b/myapp/config/initializers/session_store.rb
@@ -6,18 +6,3 @@ Myapp::Application.config.session_store :cookie_store, key: '_myapp_session'
 # which shouldn't be used to store highly confidential information
 # (create the session table with "rails generate session_migration")
 # Myapp::Application.config.session_store :active_record_store
-
-
-# Monkeypatch necessary due to https://github.com/rails/rails/issues/15843
-require 'rack/session/abstract/id'
-class Rack::Session::Abstract::SessionHash
-  private
-  def stringify_keys(other)
-    hash = {}
-    other = other.to_hash unless other.is_a?(Hash) # hack hack hack
-    other.each do |key, value|
-      hash[key.to_s] = value
-    end
-    hash
-  end
-end