diff --git a/Gemfile.lock b/Gemfile.lock
index 158086a..10c2e4c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,12 +9,6 @@ GIT
       rack (~> 2.2)
       rack-protection (= 2.1.0)
       tilt (~> 2.0)
-    sinatra-contrib (2.1.0)
-      multi_json
-      mustermann (~> 1.0)
-      rack-protection (= 2.1.0)
-      sinatra (= 2.1.0)
-      tilt (~> 2.0)
 
 GEM
   remote: https://rubygems.org/
@@ -68,8 +62,14 @@ GEM
     multipart-post (2.1.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.3)
+    rack (2.2.6.4)
     ruby2_keywords (0.0.5)
+    sinatra-contrib (2.1.0)
+      multi_json
+      mustermann (~> 1.0)
+      rack-protection (= 2.1.0)
+      sinatra (= 2.1.0)
+      tilt (~> 2.0)
     temple (0.8.2)
     tilt (2.0.10)
     tzinfo (2.0.4)