diff --git a/Gemfile.lock b/Gemfile.lock
index 6fc70f3..c1f3edf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,7 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     oauth2 (1.4.7)
       faraday (>= 0.8, < 2.0)
@@ -42,24 +42,24 @@ GEM
     pry-doc (1.2.0)
       pry (~> 0.11)
       yard (~> 0.9.11)
-    rack (2.2.3)
+    rack (2.2.4)
     rack-flash3 (1.0.5)
       rack
-    rack-protection (2.1.0)
+    rack-protection (2.2.3)
       rack
     ruby2_keywords (0.0.5)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    sinatra-contrib (2.1.0)
+    sinatra-contrib (2.2.3)
       multi_json
-      mustermann (~> 1.0)
-      rack-protection (= 2.1.0)
-      sinatra (= 2.1.0)
+      mustermann (~> 2.0)
+      rack-protection (= 2.2.3)
+      sinatra (= 2.2.3)
       tilt (~> 2.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
     webrick (1.7.0)
     yard (0.9.26)