diff --git a/Gemfile.lock b/Gemfile.lock
index 3ff9a09..6385833 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,16 +5,18 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     launchy (2.4.3)
       addressable (~> 2.3)
-    mustermann (1.0.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     pg (1.1.4)
     public_suffix (4.0.1)
-    rack (2.0.7)
-    rack-protection (2.0.7)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
-    sinatra (2.0.7)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.7)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     tilt (2.0.10)