diff --git a/Gemfile.lock b/Gemfile.lock
index fafb409..3bc0a65 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,17 +18,19 @@ GEM
     http-form_data (2.1.1)
     http_parser.rb (0.6.0)
     lru_redux (1.1.0)
-    mustermann (1.0.2)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     public_suffix (3.0.2)
-    rack (2.2.2)
-    rack-protection (2.0.3)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
-    sinatra (2.0.3)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.3)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    tilt (2.0.8)
+    tilt (2.0.11)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.5)