diff --git a/Gemfile.lock b/Gemfile.lock
index a3fc3f730..b29c1a915 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,20 +3,24 @@ GEM
   specs:
     daemons (1.1.4)
     eventmachine (0.12.10)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     nokogiri (1.5.0)
-    rack (1.3.4)
-    rack-protection (1.1.2)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     redcarpet (2.0.0b5)
-    sinatra (1.3.0)
-      rack (~> 1.3)
-      rack-protection (~> 1.1)
-      tilt (~> 1.3)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.0)
+      mustermann (~> 1.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
+      tilt (~> 2.0)
     thin (1.2.11)
       daemons (>= 1.0.9)
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
-    tilt (1.3.3)
+    tilt (2.0.10)
 
 PLATFORMS
   ruby