diff --git a/Gemfile b/Gemfile
index 8ad9d3a..240a036 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '~> 5.0.0'
+gem 'rails', '~> 5.0.7', '>= 5.0.7.1'
 # Use postgresql as the database for Active Record
 gem 'pg', '~> 0.18'
 # Use Puma as the app server
@@ -27,7 +27,7 @@ gem 'will_paginate'
 gem 'will_paginate-bootstrap'
 
 # Premailer for HTM/CSS mail formating
-gem 'premailer-rails'
+gem 'premailer-rails', '>= 1.9.4'
 
 # Bootstrap-form for bootstraop styled forms
 gem 'bootstrap_form', git: 'https://github.com/bootstrap-ruby/rails-bootstrap-forms.git'
diff --git a/Gemfile.lock b/Gemfile.lock
index c7279ef..421fef1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,44 +21,45 @@ GEM
   remote: https://rubygems.org/
   remote: https://rails-assets.org/
   specs:
-    actioncable (5.0.7)
-      actionpack (= 5.0.7)
+    actioncable (5.0.7.1)
+      actionpack (= 5.0.7.1)
       nio4r (>= 1.2, < 3.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.0.7)
-      actionpack (= 5.0.7)
-      actionview (= 5.0.7)
-      activejob (= 5.0.7)
+    actionmailer (5.0.7.1)
+      actionpack (= 5.0.7.1)
+      actionview (= 5.0.7.1)
+      activejob (= 5.0.7.1)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.0.7)
-      actionview (= 5.0.7)
-      activesupport (= 5.0.7)
+    actionpack (5.0.7.1)
+      actionview (= 5.0.7.1)
+      activesupport (= 5.0.7.1)
       rack (~> 2.0)
       rack-test (~> 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.0.7)
-      activesupport (= 5.0.7)
+    actionview (5.0.7.1)
+      activesupport (= 5.0.7.1)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.0.7)
-      activesupport (= 5.0.7)
+    activejob (5.0.7.1)
+      activesupport (= 5.0.7.1)
       globalid (>= 0.3.6)
-    activemodel (5.0.7)
-      activesupport (= 5.0.7)
-    activerecord (5.0.7)
-      activemodel (= 5.0.7)
-      activesupport (= 5.0.7)
+    activemodel (5.0.7.1)
+      activesupport (= 5.0.7.1)
+    activerecord (5.0.7.1)
+      activemodel (= 5.0.7.1)
+      activesupport (= 5.0.7.1)
       arel (~> 7.0)
-    activesupport (5.0.7)
+    activesupport (5.0.7.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     arel (7.1.4)
     autoprefixer-rails (6.3.7)
       execjs
@@ -67,9 +68,9 @@ GEM
       sass (>= 3.3.4)
     builder (3.2.3)
     byebug (9.0.6)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.3)
     crass (1.0.4)
-    css_parser (1.4.5)
+    css_parser (1.6.0)
       addressable
     database_cleaner (1.5.3)
     diff-lcs (1.2.5)
@@ -90,7 +91,7 @@ GEM
     globalid (0.4.1)
       activesupport (>= 4.2.0)
     htmlentities (4.3.4)
-    i18n (1.0.1)
+    i18n (1.1.1)
       concurrent-ruby (~> 1.0)
     jbuilder (2.6.0)
       activesupport (>= 3.0.0, < 5.1)
@@ -104,41 +105,43 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.2.2)
+    loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.7.0)
+    mail (2.7.1)
       mini_mime (>= 0.1.1)
-    method_source (0.9.0)
-    mini_mime (1.0.0)
+    method_source (0.9.2)
+    mini_mime (1.0.1)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     multi_json (1.12.1)
-    nio4r (2.3.0)
-    nokogiri (1.8.2)
+    nio4r (2.3.1)
+    nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     pg (0.19.0)
-    premailer (1.8.7)
-      css_parser (>= 1.4.5)
+    premailer (1.11.1)
+      addressable
+      css_parser (>= 1.6.0)
       htmlentities (>= 4.0.0)
-    premailer-rails (1.9.4)
+    premailer-rails (1.10.2)
       actionmailer (>= 3, < 6)
       premailer (~> 1.7, >= 1.7.9)
+    public_suffix (3.0.3)
     puma (3.6.0)
-    rack (2.0.4)
+    rack (2.0.6)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (5.0.7)
-      actioncable (= 5.0.7)
-      actionmailer (= 5.0.7)
-      actionpack (= 5.0.7)
-      actionview (= 5.0.7)
-      activejob (= 5.0.7)
-      activemodel (= 5.0.7)
-      activerecord (= 5.0.7)
-      activesupport (= 5.0.7)
+    rails (5.0.7.1)
+      actioncable (= 5.0.7.1)
+      actionmailer (= 5.0.7.1)
+      actionpack (= 5.0.7.1)
+      actionview (= 5.0.7.1)
+      activejob (= 5.0.7.1)
+      activemodel (= 5.0.7.1)
+      activerecord (= 5.0.7.1)
+      activesupport (= 5.0.7.1)
       bundler (>= 1.3.0)
-      railties (= 5.0.7)
+      railties (= 5.0.7.1)
       sprockets-rails (>= 2.0.0)
     rails-assets-bowser (1.4.3)
     rails-assets-d3 (4.1.1)
@@ -161,9 +164,9 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
-    railties (5.0.7)
-      actionpack (= 5.0.7)
-      activesupport (= 5.0.7)
+    railties (5.0.7.1)
+      actionpack (= 5.0.7.1)
+      activesupport (= 5.0.7.1)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
@@ -197,7 +200,7 @@ GEM
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)
       spring (>= 1.2, < 3.0)
-    sprockets (3.7.1)
+    sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)
@@ -209,7 +212,7 @@ GEM
     therubyracer (0.12.2)
       libv8 (~> 3.16.14.0)
       ref
-    thor (0.20.0)
+    thor (0.20.3)
     thread_safe (0.3.6)
     tilt (2.0.5)
     turbolinks (5.0.1)
@@ -242,9 +245,9 @@ DEPENDENCIES
   listen (~> 3.0.8)
   nokogiri (~> 1.8.2)
   pg (~> 0.18)
-  premailer-rails
+  premailer-rails (>= 1.9.4)
   puma (~> 3.0)
-  rails (~> 5.0.0)
+  rails (~> 5.0.7, >= 5.0.7.1)
   rails-assets-bowser!
   rails-assets-d3!
   rails-assets-google-code-prettify!
@@ -270,4 +273,4 @@ DEPENDENCIES
   will_paginate-bootstrap
 
 BUNDLED WITH
-   1.16.1
+   1.17.1