diff --git a/webapp/ruby/Gemfile.lock b/webapp/ruby/Gemfile.lock
index d0d5496..393c302 100644
--- a/webapp/ruby/Gemfile.lock
+++ b/webapp/ruby/Gemfile.lock
@@ -16,30 +16,30 @@ GEM
   specs:
     kgio (2.11.3)
     multi_json (1.15.0)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     newrelic_rpm (6.11.0.365)
     nio4r (2.5.3)
     puma (4.3.6)
       nio4r (~> 2.0)
-    rack (2.2.3)
-    rack-protection (2.1.0)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     raindrops (0.19.1)
-    ruby2_keywords (0.0.2)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    sinatra-contrib (2.1.0)
+    sinatra-contrib (2.2.3)
       multi_json
-      mustermann (~> 1.0)
-      rack-protection (= 2.1.0)
-      sinatra (= 2.1.0)
+      mustermann (~> 2.0)
+      rack-protection (= 2.2.3)
+      sinatra (= 2.2.3)
       tilt (~> 2.0)
     symbol-fstring (1.0.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
     unicorn (5.7.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)