Index: gitlab/Gemfile
===================================================================
--- gitlab.orig/Gemfile
+++ gitlab/Gemfile
@@ -25,7 +25,7 @@ gem 'omniauth-kerberos', group: :kerbero
 gem 'omniauth-gitlab'
 gem 'omniauth-bitbucket'
 gem 'omniauth-saml', '~> 1.4.0'
-gem 'doorkeeper', '2.1.3'
+gem 'doorkeeper', '~> 2.1'
 gem "rack-oauth2", "~> 1.0.5"
 
 # Two-factor authentication