diff --git a/Gemfile.lock b/Gemfile.lock
index d914fbd..eaf0fbe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -267,7 +267,7 @@ GEM
     msgpack (1.3.3)
     multi_json (1.15.0)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     mustermann-grape (1.0.1)
       mustermann (>= 1.0.0)
@@ -319,7 +319,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.4)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-cors (1.1.1)
@@ -327,7 +327,7 @@ GEM
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)
       rack (>= 1.1)
-    rack-protection (2.1.0)
+    rack-protection (2.2.3)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -408,7 +408,7 @@ GEM
       rspec-mocks (~> 3.9)
       rspec-support (~> 3.9)
     rspec-support (3.9.4)
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     rubyzip (2.3.0)
     sass (3.7.4)
@@ -453,10 +453,10 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.3)
-    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)
     slim (4.1.0)
       temple (>= 0.7.6, < 0.9)
@@ -478,7 +478,7 @@ GEM
     temple (0.8.2)
     thor (1.0.1)
     thread_safe (0.3.6)
-    tilt (2.0.10)
+    tilt (2.0.11)
     ttfunk (1.6.2.1)
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)