diff --git a/Gemfile.lock b/Gemfile.lock
index bcb0d8319..896390121 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -308,7 +308,7 @@ GEM
     multi_test (0.1.2)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    mustermann (1.1.0)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     naught (1.1.0)
     newrelic_rpm (6.10.0.364)
@@ -353,10 +353,10 @@ GEM
       multi_json
     puma (4.3.3)
       nio4r (~> 2.0)
-    rack (2.2.2)
+    rack (2.2.4)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.3)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -437,7 +437,7 @@ GEM
     rubocop-rspec (1.38.1)
       rubocop (>= 0.68.1)
     ruby-progressbar (1.10.1)
-    ruby2_keywords (0.0.1)
+    ruby2_keywords (0.0.5)
     safe_yaml (1.0.5)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
@@ -469,10 +469,10 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.1)
-    sinatra (2.0.8.1)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     spring (2.0.2)
       activesupport (>= 4.2)
@@ -492,7 +492,7 @@ GEM
       ref
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.10)
+    tilt (2.0.11)
     timecop (0.9.1)
     twitter (7.0.0)
       addressable (~> 2.3)