diff --git a/Gemfile.lock b/Gemfile.lock
index 1399ebb32..3e52988aa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,16 +11,23 @@ GEM
   remote: http://rubygems.org/
   specs:
     json (1.4.6)
-    rack (1.2.2)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
+    rack (2.2.3)
+    rack-protection (2.1.0)
+      rack
     rack-test (0.5.7)
       rack (>= 1.0)
     redis (2.1.1)
     redis-namespace (0.10.0)
       redis (< 3.0.0)
-    sinatra (1.2.1)
-      rack (~> 1.1)
-      tilt (>= 1.2.2, < 2.0)
-    tilt (1.2.2)
+    ruby2_keywords (0.0.2)
+    sinatra (2.1.0)
+      mustermann (~> 1.0)
+      rack (~> 2.2)
+      rack-protection (= 2.1.0)
+      tilt (~> 2.0)
+    tilt (2.0.10)
     vegas (0.1.8)
       rack (>= 1.0.0)