diff --git a/Gemfile b/Gemfile
index f2e9e7d..0066350 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-gem 'rails', '= 5.1.5'
+gem 'rails', '= 5.1.6'
 gem 'mysql2', '>= 0.3.18', '< 0.5'
 gem 'puma', '~> 3.0'
 gem 'turbolinks', '~> 5'
diff --git a/Gemfile.lock b/Gemfile.lock
index 9b9c797..218a609 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,41 +3,41 @@ GEM
   specs:
     acme-client (0.6.2)
       faraday (~> 0.9, >= 0.9.1)
-    actioncable (5.1.5)
-      actionpack (= 5.1.5)
+    actioncable (5.1.6)
+      actionpack (= 5.1.6)
       nio4r (~> 2.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.1.5)
-      actionpack (= 5.1.5)
-      actionview (= 5.1.5)
-      activejob (= 5.1.5)
+    actionmailer (5.1.6)
+      actionpack (= 5.1.6)
+      actionview (= 5.1.6)
+      activejob (= 5.1.6)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.5)
-      actionview (= 5.1.5)
-      activesupport (= 5.1.5)
+    actionpack (5.1.6)
+      actionview (= 5.1.6)
+      activesupport (= 5.1.6)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.5)
-      activesupport (= 5.1.5)
+    actionview (5.1.6)
+      activesupport (= 5.1.6)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.1.5)
-      activesupport (= 5.1.5)
+    activejob (5.1.6)
+      activesupport (= 5.1.6)
       globalid (>= 0.3.6)
-    activemodel (5.1.5)
-      activesupport (= 5.1.5)
-    activerecord (5.1.5)
-      activemodel (= 5.1.5)
-      activesupport (= 5.1.5)
+    activemodel (5.1.6)
+      activesupport (= 5.1.6)
+    activerecord (5.1.6)
+      activemodel (= 5.1.6)
+      activesupport (= 5.1.6)
       arel (~> 8.0)
-    activesupport (5.1.5)
+    activesupport (5.1.6)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     amq-protocol (2.3.0)
@@ -68,7 +68,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
-    crass (1.0.3)
+    crass (1.0.4)
     createsend (4.1.2)
       hashie (~> 3.0)
       httparty (~> 0.14)
@@ -78,7 +78,7 @@ GEM
     diff-lcs (1.3)
     dynamic_form (1.1.4)
     encrypto_signo (1.0.0)
-    erubi (1.7.0)
+    erubi (1.7.1)
     execjs (2.7.0)
     factory_girl (4.9.0)
       activesupport (>= 3.0.0)
@@ -101,7 +101,7 @@ GEM
     highline (1.7.10)
     httparty (0.16.0)
       multi_xml (>= 0.5.2)
-    i18n (0.9.5)
+    i18n (1.0.1)
       concurrent-ruby (~> 1.0)
     jquery-rails (4.3.1)
       rails-dom-testing (>= 1, < 3)
@@ -143,37 +143,37 @@ GEM
     nilify_blanks (1.3.0)
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
-    nio4r (2.2.0)
-    nokogiri (1.8.2)
+    nio4r (2.3.1)
+    nokogiri (1.8.3)
       mini_portile2 (~> 2.3.0)
     puma (3.11.2)
-    rack (2.0.4)
-    rack-test (0.8.2)
+    rack (2.0.5)
+    rack-test (1.0.0)
       rack (>= 1.0, < 3)
-    rails (5.1.5)
-      actioncable (= 5.1.5)
-      actionmailer (= 5.1.5)
-      actionpack (= 5.1.5)
-      actionview (= 5.1.5)
-      activejob (= 5.1.5)
-      activemodel (= 5.1.5)
-      activerecord (= 5.1.5)
-      activesupport (= 5.1.5)
+    rails (5.1.6)
+      actioncable (= 5.1.6)
+      actionmailer (= 5.1.6)
+      actionpack (= 5.1.6)
+      actionview (= 5.1.6)
+      activejob (= 5.1.6)
+      activemodel (= 5.1.6)
+      activerecord (= 5.1.6)
+      activesupport (= 5.1.6)
       bundler (>= 1.3.0)
-      railties (= 5.1.5)
+      railties (= 5.1.6)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
-    railties (5.1.5)
-      actionpack (= 5.1.5)
-      activesupport (= 5.1.5)
+    railties (5.1.6)
+      actionpack (= 5.1.6)
+      activesupport (= 5.1.6)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (12.3.0)
+    rake (12.3.1)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -213,7 +213,7 @@ GEM
       useragent (>= 0.15.0)
     sentry-raven (2.7.2)
       faraday (>= 0.7.6, < 1.0)
-    sprockets (3.7.1)
+    sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)
@@ -273,7 +273,7 @@ DEPENDENCIES
   nilify_blanks
   nio4r
   puma (~> 3.0)
-  rails (= 5.1.5)
+  rails (= 5.1.6)
   rspec
   rspec-rails
   sass-rails (~> 5.0)