diff --git a/Gemfile b/Gemfile
index 5d3709c8d640aa69eb6f0247b6b397d42f4ce08d..505b5b4bc4dbab3597b057273cc56a77041ee8ea 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,7 +26,7 @@ gem 'marginalia', '~> 1.8.0'
 
 # Authentication libraries
 gem 'devise', '~> 4.6'
-gem 'doorkeeper', '~> 5.0.2'
+gem 'doorkeeper', '~> 5.0.3'
 gem 'doorkeeper-openid_connect', '~> 1.6.3'
 gem 'omniauth', '~> 1.8'
 gem 'omniauth-auth0', '~> 2.0.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index f3912d5a16e5810efaa52d8d8e6a5b97e8ddd927..c1f5ecd3e8b6f56e9380c0d2e2ac2e8a794231a4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -245,7 +245,7 @@ GEM
     docile (1.3.2)
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
-    doorkeeper (5.0.2)
+    doorkeeper (5.0.3)
       railties (>= 4.2)
     doorkeeper-openid_connect (1.6.3)
       doorkeeper (>= 5.0, < 5.2)
@@ -1205,7 +1205,7 @@ DEPENDENCIES
   diff_match_patch (~> 0.1.0)
   diffy (~> 3.3)
   discordrb-webhooks-blackst0ne (~> 3.3)
-  doorkeeper (~> 5.0.2)
+  doorkeeper (~> 5.0.3)
   doorkeeper-openid_connect (~> 1.6.3)
   ed25519 (~> 1.2)
   elasticsearch-api (~> 6.8)
diff --git a/changelogs/unreleased/update-doorkeeper-503.yml b/changelogs/unreleased/update-doorkeeper-503.yml
new file mode 100644
index 0000000000000000000000000000000000000000..3f578bf0d469a7376dab86fc723777a9fbdda18c
--- /dev/null
+++ b/changelogs/unreleased/update-doorkeeper-503.yml
@@ -0,0 +1,5 @@
+---
+title: Update doorkeeper to latest version 5.0.3
+merge_request: 502
+author:
+type: other