diff --git a/Gemfile.lock b/Gemfile.lock
index 051a6e7e1..c4e53ff0f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -269,7 +269,7 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     neat (1.9.1)
       sass (>= 3.3)
@@ -336,8 +336,9 @@ GEM
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)
       rack (>= 1.1)
-    rack-protection (2.1.0)
-      rack
+    rack-protection (3.2.0)
+      base64 (>= 0.1.0)
+      rack (~> 2.2, >= 2.2.4)
     rack-rewrite (1.5.1)
     rack-test (2.1.0)
       rack (>= 1.3)
@@ -422,7 +423,7 @@ GEM
     rspec-support (3.10.0)
     rspec_junit_formatter (0.4.1)
       rspec-core (>= 2, < 4, != 2.12.0)
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -462,10 +463,10 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.2)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
-      rack (~> 2.2)
-      rack-protection (= 2.1.0)
+    sinatra (3.2.0)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.2.0)
       tilt (~> 2.0)
     snaky_hash (2.0.1)
       hashie
@@ -488,7 +489,7 @@ GEM
       climate_control (>= 0.0.3, < 1.0)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.10)
+    tilt (2.3.0)
     timecop (0.9.2)
     tzinfo (1.2.11)
       thread_safe (~> 0.1)