diff --git a/Gemfile b/Gemfile
index 6b23a59..30156f6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source 'http://rubygems.org'
 
-gem 'sinatra', '~> 2.0'
+gem 'sinatra', '~> 2.2'
 gem 'jwt', '~> 2.1'
 gem 'octokit', '~> 4.0'
 gem 'dotenv'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3c6b669..4505bd3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,23 +23,24 @@ GEM
     faraday-patron (1.0.0)
     jwt (2.1.0)
     multipart-post (2.1.1)
-    mustermann (1.0.3)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     octokit (4.13.0)
       sawyer (~> 0.8.0, >= 0.5.3)
     public_suffix (4.0.6)
-    rack (2.2.3)
-    rack-protection (2.0.4)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     ruby2_keywords (0.0.4)
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
-    sinatra (2.0.4)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.4)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    tilt (2.0.8)
+    tilt (2.0.11)
 
 PLATFORMS
   ruby
@@ -48,7 +49,7 @@ DEPENDENCIES
   dotenv
   jwt (~> 2.1)
   octokit (~> 4.0)
-  sinatra (~> 2.0)
+  sinatra (~> 2.2)
 
 BUNDLED WITH
    1.17.1