diff --git a/Gemfile.lock b/Gemfile.lock
index 878aefb..8a31069 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,11 +56,12 @@ GEM
     mini_mime (1.0.2)
     multi_json (1.14.1)
     multipart-post (2.1.1)
-    mustermann (1.0.2)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     os (1.0.1)
     public_suffix (4.0.6)
-    rack (2.2.3)
-    rack-protection (2.0.3)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -85,22 +86,23 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.1)
+    ruby2_keywords (0.0.5)
     sass (3.4.25)
     signet (0.12.0)
       addressable (~> 2.3)
       faraday (~> 0.9)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    sinatra (2.0.3)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.3)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     slim (4.0.1)
       temple (>= 0.7.6, < 0.9)
       tilt (>= 2.0.6, < 2.1)
     temple (0.8.2)
-    tilt (2.0.8)
+    tilt (2.0.11)
     uber (0.1.0)
 
 PLATFORMS