diff --git a/debian/patches/0003-loosen-doorkeeper.patch b/debian/patches/0003-loosen-doorkeeper.patch
new file mode 100644
index 0000000000..617d5ae787
--- /dev/null
+++ b/debian/patches/0003-loosen-doorkeeper.patch
@@ -0,0 +1,13 @@
+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
diff --git a/debian/patches/series b/debian/patches/series
index 8c630fed57..5931cd61b2 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -1,2 +1,3 @@
 loosen-rails-version.patch
 0002-loosen-devise.patch
+0003-loosen-doorkeeper.patch