diff --git a/Gemfile b/Gemfile
index 2f059b6..9729406 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 source "http://rubygems.org"
 
-gem "sinatra", "1.3.1"
+gem "sinatra", "2.2.0"
 gem "oauth",   "0.4.5"
diff --git a/Gemfile.lock b/Gemfile.lock
index 140aae3..2fdba01 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,22 +1,26 @@
 GEM
   remote: http://rubygems.org/
   specs:
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     oauth (0.4.5)
-    rack (1.6.11)
-    rack-protection (1.5.5)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
-    sinatra (1.3.1)
-      rack (~> 1.3, >= 1.3.4)
-      rack-protection (~> 1.1, >= 1.1.2)
-      tilt (~> 1.3, >= 1.3.3)
-    tilt (1.4.1)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.0)
+      mustermann (~> 1.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
+      tilt (~> 2.0)
+    tilt (2.0.10)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   oauth (= 0.4.5)
-  sinatra (= 1.3.1)
+  sinatra (= 2.2.0)
 
 BUNDLED WITH
    1.17.2