diff --git a/Gemfile.lock b/Gemfile.lock
index 843bda3..fee2269 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,11 +2,18 @@ GEM
   remote: http://rubygems.org/
   specs:
     haml (3.0.25)
-    rack (1.2.2)
-    sinatra (1.2.2)
-      rack (~> 1.1)
-      tilt (>= 1.2.2, < 2.0)
-    tilt (1.2.2)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
+    rack (2.2.4)
+    rack-protection (2.2.3)
+      rack
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
+      tilt (~> 2.0)
+    tilt (2.0.11)
 
 PLATFORMS
   ruby