diff --git a/Gemfile b/Gemfile
index 6bcec97ad147c8..eb2fc00e09f771 100644
--- a/Gemfile
+++ b/Gemfile
@@ -46,7 +46,7 @@ gem 'omniauth-rails_csrf_protection', '~> 0.1'
 
 gem 'color_diff', '~> 0.1'
 gem 'discard', '~> 1.2'
-gem 'doorkeeper', '~> 5.5'
+gem 'doorkeeper', '~> 5.6'
 gem 'ed25519', '~> 1.3'
 gem 'fast_blank', '~> 1.0'
 gem 'fastimage'
diff --git a/Gemfile.lock b/Gemfile.lock
index 8751775ef298c9..19d65ed303253c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -197,7 +197,7 @@ GEM
     docile (1.3.4)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
-    doorkeeper (5.5.4)
+    doorkeeper (5.6.4)
       railties (>= 5)
     dotenv (2.7.6)
     dotenv-rails (2.7.6)
@@ -215,7 +215,7 @@ GEM
       faraday (~> 1)
       multi_json
     encryptor (3.0.0)
-    erubi (1.10.0)
+    erubi (1.12.0)
     et-orbi (1.2.7)
       tzinfo
     excon (0.76.0)
@@ -305,7 +305,7 @@ GEM
     httplog (1.5.0)
       rack (>= 1.0)
       rainbow (>= 2.0.0)
-    i18n (1.10.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     i18n-tasks (1.0.9)
       activesupport (>= 4.0.2)
@@ -375,7 +375,7 @@ GEM
       activesupport (>= 4)
       railties (>= 4)
       request_store (~> 1.0)
-    loofah (2.16.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -395,8 +395,8 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2022.0105)
     mini_mime (1.1.2)
-    mini_portile2 (2.8.0)
-    minitest (5.15.0)
+    mini_portile2 (2.8.1)
+    minitest (5.17.0)
     msgpack (1.5.1)
     multi_json (1.15.0)
     multipart-post (2.1.1)
@@ -474,7 +474,7 @@ GEM
     pundit (2.2.0)
       activesupport (>= 3.0.0)
     raabro (1.4.0)
-    racc (1.6.0)
+    racc (1.6.2)
     rack (2.2.3)
     rack-attack (6.6.1)
       rack (>= 1.0, < 3)
@@ -488,8 +488,8 @@ GEM
       rack (>= 2.1.0)
     rack-proxy (0.7.0)
       rack
-    rack-test (1.1.0)
-      rack (>= 1.0, < 3)
+    rack-test (2.0.2)
+      rack (>= 1.3)
     rails (6.1.5)
       actioncable (= 6.1.5)
       actionmailbox (= 6.1.5)
@@ -512,8 +512,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.2)
-      loofah (~> 2.3)
+    rails-html-sanitizer (1.5.0)
+      loofah (~> 2.19, >= 2.19.1)
     rails-i18n (6.0.0)
       i18n (>= 0.7, < 2)
       railties (>= 6.0.0, < 7)
@@ -675,7 +675,7 @@ GEM
     twitter-text (3.1.0)
       idn-ruby
       unf (~> 0.1.0)
-    tzinfo (2.0.4)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     tzinfo-data (1.2022.1)
       tzinfo (>= 1.0.0)
@@ -724,7 +724,7 @@ GEM
     xorcist (1.1.2)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.5.4)
+    zeitwerk (2.6.6)
 
 PLATFORMS
   ruby
@@ -758,7 +758,7 @@ DEPENDENCIES
   devise-two-factor (~> 4.0)
   devise_pam_authenticatable2 (~> 9.2)
   discard (~> 1.2)
-  doorkeeper (~> 5.5)
+  doorkeeper (~> 5.6)
   dotenv-rails (~> 2.7)
   ed25519 (~> 1.3)
   fabrication (~> 2.28)