diff --git a/Gemfile b/Gemfile
index fae2446..858d163 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source "http://rubygems.org"
 
 gem "rack", "~> 2.2"
-gem "sinatra", "~> 2.1"
+gem "sinatra", "~> 2.2"
 gem "wlang", "~> 2.2"
 gem "path", "~> 1.3"
 gem "thin", "~> 1.6"
diff --git a/Gemfile.lock b/Gemfile.lock
index ceef83c..149665e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,7 +18,7 @@ GEM
     path (1.3.3)
     quickl (0.4.3)
     rack (2.2.3)
-    rack-protection (2.1.0)
+    rack-protection (2.2.0)
       rack
     rack-test (0.8.3)
       rack (>= 1.0, < 3)
@@ -35,17 +35,17 @@ GEM
     rspec-expectations (2.99.2)
       diff-lcs (>= 1.1.3, < 2.0)
     rspec-mocks (2.99.4)
-    ruby2_keywords (0.0.2)
-    sinatra (2.1.0)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
-    sinatra-contrib (2.1.0)
+    sinatra-contrib (2.2.0)
       multi_json
       mustermann (~> 1.0)
-      rack-protection (= 2.1.0)
-      sinatra (= 2.1.0)
+      rack-protection (= 2.2.0)
+      sinatra (= 2.2.0)
       tilt (~> 2.0)
     sinatra-reloader (1.0)
       sinatra-contrib
@@ -75,7 +75,7 @@ DEPENDENCIES
   rake (~> 13.0)
   rest-client (~> 1.7)
   rspec (~> 2.14)
-  sinatra (~> 2.1)
+  sinatra (~> 2.2)
   sinatra-reloader (~> 1.0)
   thin (~> 1.6)
   wlang (~> 2.2)