diff --git a/Gemfile.lock b/Gemfile.lock
index 2210cfd..95552ab 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,23 +13,27 @@ GEM
     macaddr (1.6.1)
       systemu (~> 2.5.0)
     mustache (0.99.4)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     nokogiri (1.5.5)
     posix-spawn (0.3.6)
-    rack (1.4.1)
-    rack-protection (1.2.0)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     redcarpet (2.1.0)
     rocco (0.8.2)
       mustache
       redcarpet
+    ruby2_keywords (0.0.5)
     shotgun (0.9)
       rack (>= 1.0)
-    sinatra (1.3.2)
-      rack (~> 1.3, >= 1.3.6)
-      rack-protection (~> 1.2)
-      tilt (~> 1.3, >= 1.3.3)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
+      tilt (~> 2.0)
     systemu (2.5.2)
-    tilt (1.3.3)
+    tilt (2.0.11)
     trollop (2.0)
     uuid (2.3.6)
       macaddr (~> 1.0)