diff --git a/Gemfile.lock b/Gemfile.lock
index cac33c3..c6ba9a1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,13 +45,14 @@ GEM
     mini_portile2 (2.3.0)
     multi_json (1.12.2)
     multipart-post (2.0.0)
-    mustermann (1.0.1)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     nokogiri (1.8.1)
       mini_portile2 (~> 2.3.0)
     os (0.9.6)
     public_suffix (3.0.1)
-    rack (2.0.3)
-    rack-protection (2.0.0)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rack-test (0.8.2)
       rack (>= 1.0, < 3)
@@ -73,17 +74,18 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.0)
+    ruby2_keywords (0.0.5)
     signet (0.8.1)
       addressable (~> 2.3)
       faraday (~> 0.9)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    sinatra (2.0.0)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
-    tilt (2.0.8)
+    tilt (2.0.10)
     uber (0.1.0)
 
 PLATFORMS