diff --git a/Gemfile.lock b/Gemfile.lock
index 74c86b5a..a6914b46 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,158 +2,189 @@ PATH
   remote: .
   specs:
     exception_notification (4.1.1)
-      actionmailer (>= 3.0.4)
-      activesupport (>= 3.0.4)
+      actionmailer (~> 4.0)
+      activesupport (~> 4.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (3.2.6)
-      actionpack (= 3.2.6)
-      mail (~> 2.4.4)
-    actionpack (3.2.6)
-      activemodel (= 3.2.6)
-      activesupport (= 3.2.6)
-      builder (~> 3.0.0)
+    actionmailer (4.2.4)
+      actionpack (= 4.2.4)
+      actionview (= 4.2.4)
+      activejob (= 4.2.4)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.4)
+      actionview (= 4.2.4)
+      activesupport (= 4.2.4)
+      rack (~> 1.6)
+      rack-test (~> 0.6.2)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.4)
+      activesupport (= 4.2.4)
+      builder (~> 3.1)
       erubis (~> 2.7.0)
-      journey (~> 1.0.1)
-      rack (~> 1.4.0)
-      rack-cache (~> 1.2)
-      rack-test (~> 0.6.1)
-      sprockets (~> 2.1.3)
-    activemodel (3.2.6)
-      activesupport (= 3.2.6)
-      builder (~> 3.0.0)
-    activerecord (3.2.6)
-      activemodel (= 3.2.6)
-      activesupport (= 3.2.6)
-      arel (~> 3.0.2)
-      tzinfo (~> 0.3.29)
-    activeresource (3.2.6)
-      activemodel (= 3.2.6)
-      activesupport (= 3.2.6)
-    activesupport (3.2.6)
-      i18n (~> 0.6)
-      multi_json (~> 1.0)
-    addressable (2.3.5)
-    appraisal (1.0.0)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    activejob (4.2.4)
+      activesupport (= 4.2.4)
+      globalid (>= 0.3.0)
+    activemodel (4.2.4)
+      activesupport (= 4.2.4)
+      builder (~> 3.1)
+    activerecord (4.2.4)
+      activemodel (= 4.2.4)
+      activesupport (= 4.2.4)
+      arel (~> 6.0)
+    activesupport (4.2.4)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    addressable (2.3.8)
+    appraisal (1.0.3)
       bundler
       rake
       thor (>= 0.14.0)
-    arel (3.0.2)
-    builder (3.0.0)
+    arel (6.0.3)
+    builder (3.2.2)
     carrier-pigeon (0.7.0)
       addressable
-    celluloid (0.15.2)
-      timers (~> 1.1.0)
-    colorize (0.5.8)
-    connection_pool (2.0.0)
-    coveralls (0.6.5)
-      colorize
+    celluloid (0.16.0)
+      timers (~> 4.0.0)
+    connection_pool (2.2.0)
+    coveralls (0.6.9)
       multi_json (~> 1.3)
       rest-client
       simplecov (>= 0.7)
+      term-ansicolor
       thor
+    docile (1.1.5)
+    domain_name (0.5.24)
+      unf (>= 0.0.5, < 1.0.0)
     erubis (2.7.0)
-    eventmachine (1.0.3)
-    faraday (0.8.7)
-      multipart-post (~> 1.1)
-    faraday_middleware (0.9.0)
-      faraday (>= 0.7.4, < 0.9)
-    hashie (1.2.0)
-    hike (1.2.1)
-    hipchat (1.2.0)
+    eventmachine (1.0.8)
+    faraday (0.9.1)
+      multipart-post (>= 1.2, < 3)
+    faraday_middleware (0.10.0)
+      faraday (>= 0.7.4, < 0.10)
+    globalid (0.3.6)
+      activesupport (>= 4.1.0)
+    hashie (3.4.2)
+    hipchat (1.5.2)
       httparty
+      mimemagic
+    hitimes (1.2.2)
+    http-cookie (1.0.2)
+      domain_name (~> 0.5)
     http_parser.rb (0.5.3)
     httparty (0.10.2)
       multi_json (~> 1.0)
       multi_xml (>= 0.5.2)
-    i18n (0.6.0)
-    journey (1.0.4)
-    json (1.8.1)
-    mail (2.4.4)
-      i18n (>= 0.4.0)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
-    metaclass (0.0.1)
-    mime-types (1.19)
-    mocha (0.13.3)
+    i18n (0.7.0)
+    json (1.8.3)
+    loofah (2.0.3)
+      nokogiri (>= 1.5.9)
+    mail (2.6.3)
+      mime-types (>= 1.16, < 3)
+    metaclass (0.0.4)
+    mime-types (2.6.1)
+    mimemagic (0.3.0)
+    mini_portile (0.6.2)
+    minitest (5.8.0)
+    mocha (1.1.0)
       metaclass (~> 0.0.1)
-    multi_json (1.10.1)
+    multi_json (1.11.2)
     multi_xml (0.5.5)
-    multipart-post (1.2.0)
-    polyglot (0.3.3)
-    rack (1.4.1)
-    rack-cache (1.2)
-      rack (>= 0.4)
-    rack-ssl (1.3.2)
-      rack
-    rack-test (0.6.1)
+    multipart-post (2.0.0)
+    netrc (0.10.3)
+    nokogiri (1.6.6.2)
+      mini_portile (~> 0.6.0)
+    rack (1.6.4)
+    rack-test (0.6.3)
       rack (>= 1.0)
-    rails (3.2.6)
-      actionmailer (= 3.2.6)
-      actionpack (= 3.2.6)
-      activerecord (= 3.2.6)
-      activeresource (= 3.2.6)
-      activesupport (= 3.2.6)
-      bundler (~> 1.0)
-      railties (= 3.2.6)
-    railties (3.2.6)
-      actionpack (= 3.2.6)
-      activesupport (= 3.2.6)
-      rack-ssl (~> 1.3.2)
+    rails (4.2.4)
+      actionmailer (= 4.2.4)
+      actionpack (= 4.2.4)
+      actionview (= 4.2.4)
+      activejob (= 4.2.4)
+      activemodel (= 4.2.4)
+      activerecord (= 4.2.4)
+      activesupport (= 4.2.4)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.2.4)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.7)
+      activesupport (>= 4.2.0.beta, < 5.0)
+      nokogiri (~> 1.6.0)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.0.2)
+      loofah (~> 2.0)
+    railties (4.2.4)
+      actionpack (= 4.2.4)
+      activesupport (= 4.2.4)
       rake (>= 0.8.7)
-      rdoc (~> 3.4)
-      thor (>= 0.14.6, < 2.0)
-    rake (0.9.2.2)
-    rdoc (3.12)
-      json (~> 1.4)
-    redis (3.0.7)
-    redis-namespace (1.4.1)
-      redis (~> 3.0.4)
+      thor (>= 0.18.1, < 2.0)
+    rake (10.4.2)
+    redis (3.2.1)
+    redis-namespace (1.5.2)
+      redis (~> 3.0, >= 3.0.4)
     resque (1.2.3)
       redis
       redis-namespace
-    rest-client (1.6.7)
-      mime-types (>= 1.16)
-    sidekiq (3.0.0)
-      celluloid (>= 0.15.2)
-      connection_pool (>= 2.0.0)
-      json
-      redis (>= 3.0.6)
-      redis-namespace (>= 1.3.1)
+    rest-client (1.8.0)
+      http-cookie (>= 1.0.2, < 2.0)
+      mime-types (>= 1.16, < 3.0)
+      netrc (~> 0.7)
+    sidekiq (3.4.2)
+      celluloid (~> 0.16.0)
+      connection_pool (~> 2.2, >= 2.2.0)
+      json (~> 1.0)
+      redis (~> 3.2, >= 3.2.1)
+      redis-namespace (~> 1.5, >= 1.5.2)
     simple_oauth (0.1.9)
-    simplecov (0.7.1)
-      multi_json (~> 1.0)
-      simplecov-html (~> 0.7.1)
-    simplecov-html (0.7.1)
-    slack-notifier (1.0.0)
-    sprockets (2.1.3)
-      hike (~> 1.2)
+    simplecov (0.10.0)
+      docile (~> 1.1.0)
+      json (~> 1.8)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.0)
+    slack-notifier (1.2.1)
+    sprockets (3.3.3)
       rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sqlite3 (1.3.6)
-    thor (0.15.4)
-    tilt (1.3.3)
-    timers (1.1.0)
-    tinder (1.9.1)
-      eventmachine (>= 0.12.0, < 2)
-      faraday (~> 0.8)
-      faraday_middleware (~> 0.8)
-      hashie (~> 1.0)
-      json (~> 1.6)
-      mime-types (~> 1.16)
-      multi_json (~> 1.0)
-      multipart-post (~> 1.1)
+    sprockets-rails (2.3.2)
+      actionpack (>= 3.0)
+      activesupport (>= 3.0)
+      sprockets (>= 2.8, < 4.0)
+    sqlite3 (1.3.10)
+    term-ansicolor (1.3.2)
+      tins (~> 1.0)
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    timers (4.0.1)
+      hitimes
+    tinder (1.10.1)
+      eventmachine (~> 1.0)
+      faraday (~> 0.9.0)
+      faraday_middleware (~> 0.9)
+      hashie (>= 1.0)
+      json (~> 1.8.0)
+      mime-types
+      multi_json (~> 1.7)
       twitter-stream (~> 0.1)
-    treetop (1.4.10)
-      polyglot
-      polyglot (>= 0.3.1)
+    tins (1.6.0)
     twitter-stream (0.1.16)
       eventmachine (>= 0.12.8)
       http_parser.rb (~> 0.5.1)
       simple_oauth (~> 0.1.4)
-    tzinfo (0.3.33)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.7.1)
 
 PLATFORMS
   ruby
@@ -166,7 +197,7 @@ DEPENDENCIES
   hipchat (>= 1.0.0)
   httparty (~> 0.10.2)
   mocha (>= 0.13.0)
-  rails (>= 3.0.4)
+  rails (~> 4.0)
   resque (~> 1.2.0)
   sidekiq (~> 3.0)
   slack-notifier (>= 1.0.0)
diff --git a/exception_notification.gemspec b/exception_notification.gemspec
index a5eb573c..d3fc9e5d 100644
--- a/exception_notification.gemspec
+++ b/exception_notification.gemspec
@@ -8,7 +8,7 @@ Gem::Specification.new do |s|
   s.email = "smartinez87@gmail.com"
   s.license = "MIT"
 
-  s.required_ruby_version     = '>= 1.9.3'
+  s.required_ruby_version     = '>= 2.0'
   s.required_rubygems_version = '>= 1.8.11'
 
   s.files = `git ls-files`.split("\n")
@@ -16,10 +16,10 @@ Gem::Specification.new do |s|
   s.test_files = `git ls-files -- test`.split("\n")
   s.require_path = 'lib'
 
-  s.add_dependency("actionmailer", ">= 3.0.4")
-  s.add_dependency("activesupport", ">= 3.0.4")
+  s.add_dependency("actionmailer", "~> 4.0")
+  s.add_dependency("activesupport", "~> 4.0")
 
-  s.add_development_dependency "rails", ">= 3.0.4"
+  s.add_development_dependency "rails", "~> 4.0"
   s.add_development_dependency "resque", "~> 1.2.0"
   s.add_development_dependency "sidekiq", "~> 3.0"
   s.add_development_dependency "tinder", "~> 1.8"
diff --git a/gemfiles/rails3_1.gemfile b/gemfiles/rails3_1.gemfile
deleted file mode 100644
index ff47f3a4..00000000
--- a/gemfiles/rails3_1.gemfile
+++ /dev/null
@@ -1,7 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "rails", "~> 3.1.0"
-
-gemspec :path => "../"
diff --git a/gemfiles/rails3_2.gemfile b/gemfiles/rails3_2.gemfile
deleted file mode 100644
index 3fb69d3f..00000000
--- a/gemfiles/rails3_2.gemfile
+++ /dev/null
@@ -1,7 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "rails", "~> 3.2.0"
-
-gemspec :path => "../"
diff --git a/test/dummy/Gemfile b/test/dummy/Gemfile
index a6d2d4ce..b39bf4e8 100644
--- a/test/dummy/Gemfile
+++ b/test/dummy/Gemfile
@@ -1,6 +1,6 @@
 source 'http://rubygems.org'
 
-gem 'rails', '4.0.0'
+gem 'rails', '4.2.0'
 
 # Bundle edge Rails instead:
 # gem 'rails', :git => 'git://github.com/rails/rails.git'
diff --git a/test/dummy/Gemfile.lock b/test/dummy/Gemfile.lock
index 13c7d6b8..b822df77 100644
--- a/test/dummy/Gemfile.lock
+++ b/test/dummy/Gemfile.lock
@@ -1,112 +1,130 @@
 PATH
   remote: ../../..
   specs:
-    exception_notification (4.1.0.rc1)
-      actionmailer (>= 3.0.4)
-      activesupport (>= 3.0.4)
+    exception_notification (4.1.1)
+      actionmailer (~> 4.0)
+      activesupport (~> 4.0)
 
 GEM
   remote: http://rubygems.org/
   specs:
-    actionmailer (4.0.0)
-      actionpack (= 4.0.0)
-      mail (~> 2.5.3)
-    actionpack (4.0.0)
-      activesupport (= 4.0.0)
-      builder (~> 3.1.0)
-      erubis (~> 2.7.0)
-      rack (~> 1.5.2)
+    actionmailer (4.2.0)
+      actionpack (= 4.2.0)
+      actionview (= 4.2.0)
+      activejob (= 4.2.0)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.0)
+      actionview (= 4.2.0)
+      activesupport (= 4.2.0)
+      rack (~> 1.6.0)
       rack-test (~> 0.6.2)
-    activemodel (4.0.0)
-      activesupport (= 4.0.0)
-      builder (~> 3.1.0)
-    activerecord (4.0.0)
-      activemodel (= 4.0.0)
-      activerecord-deprecated_finders (~> 1.0.2)
-      activesupport (= 4.0.0)
-      arel (~> 4.0.0)
-    activerecord-deprecated_finders (1.0.3)
-    activesupport (4.0.0)
-      i18n (~> 0.6, >= 0.6.4)
-      minitest (~> 4.2)
-      multi_json (~> 1.3)
-      thread_safe (~> 0.1)
-      tzinfo (~> 0.3.37)
-    arel (4.0.0)
-    atomic (1.1.10)
-    builder (3.1.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+    actionview (4.2.0)
+      activesupport (= 4.2.0)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.1)
+    activejob (4.2.0)
+      activesupport (= 4.2.0)
+      globalid (>= 0.3.0)
+    activemodel (4.2.0)
+      activesupport (= 4.2.0)
+      builder (~> 3.1)
+    activerecord (4.2.0)
+      activemodel (= 4.2.0)
+      activesupport (= 4.2.0)
+      arel (~> 6.0)
+    activesupport (4.2.0)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    arel (6.0.3)
+    builder (3.2.2)
     erubis (2.7.0)
-    eventmachine (1.0.3)
-    faraday (0.8.7)
-      multipart-post (~> 1.1)
-    faraday_middleware (0.9.0)
-      faraday (>= 0.7.4, < 0.9)
-    hashie (1.2.0)
-    hike (1.2.3)
+    eventmachine (1.0.8)
+    faraday (0.9.1)
+      multipart-post (>= 1.2, < 3)
+    faraday_middleware (0.10.0)
+      faraday (>= 0.7.4, < 0.10)
+    globalid (0.3.6)
+      activesupport (>= 4.1.0)
+    hashie (3.4.2)
     http_parser.rb (0.5.3)
-    httparty (0.11.0)
-      multi_json (~> 1.0)
+    httparty (0.13.5)
+      json (~> 1.8)
       multi_xml (>= 0.5.2)
-    i18n (0.6.4)
-    json (1.7.7)
-    mail (2.5.4)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
-    mime-types (1.23)
-    minitest (4.7.5)
-    multi_json (1.7.7)
-    multi_xml (0.5.4)
-    multipart-post (1.2.0)
-    polyglot (0.3.3)
-    rack (1.5.2)
-    rack-test (0.6.2)
+    i18n (0.7.0)
+    json (1.8.3)
+    loofah (2.0.3)
+      nokogiri (>= 1.5.9)
+    mail (2.6.3)
+      mime-types (>= 1.16, < 3)
+    mime-types (2.6.1)
+    mini_portile (0.6.2)
+    minitest (5.8.0)
+    multi_json (1.11.2)
+    multi_xml (0.5.5)
+    multipart-post (2.0.0)
+    nokogiri (1.6.6.2)
+      mini_portile (~> 0.6.0)
+    rack (1.6.4)
+    rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.0.0)
-      actionmailer (= 4.0.0)
-      actionpack (= 4.0.0)
-      activerecord (= 4.0.0)
-      activesupport (= 4.0.0)
+    rails (4.2.0)
+      actionmailer (= 4.2.0)
+      actionpack (= 4.2.0)
+      actionview (= 4.2.0)
+      activejob (= 4.2.0)
+      activemodel (= 4.2.0)
+      activerecord (= 4.2.0)
+      activesupport (= 4.2.0)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.0.0)
-      sprockets-rails (~> 2.0.0)
-    railties (4.0.0)
-      actionpack (= 4.0.0)
-      activesupport (= 4.0.0)
+      railties (= 4.2.0)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.7)
+      activesupport (>= 4.2.0.beta, < 5.0)
+      nokogiri (~> 1.6.0)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.0.2)
+      loofah (~> 2.0)
+    railties (4.2.0)
+      actionpack (= 4.2.0)
+      activesupport (= 4.2.0)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (10.1.0)
+    rake (10.4.2)
     simple_oauth (0.1.9)
-    sprockets (2.10.0)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
+    sprockets (3.3.3)
       rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-rails (2.0.0)
+    sprockets-rails (2.3.2)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
-      sprockets (~> 2.8)
-    sqlite3 (1.3.7)
-    thor (0.18.1)
-    thread_safe (0.1.0)
-      atomic
-    tilt (1.4.1)
-    tinder (1.9.2)
+      sprockets (>= 2.8, < 4.0)
+    sqlite3 (1.3.10)
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    tinder (1.10.1)
       eventmachine (~> 1.0)
-      faraday (~> 0.8)
+      faraday (~> 0.9.0)
       faraday_middleware (~> 0.9)
-      hashie (~> 1.0)
-      json (~> 1.7.5)
-      mime-types (~> 1.19)
-      multi_json (~> 1.5)
+      hashie (>= 1.0)
+      json (~> 1.8.0)
+      mime-types
+      multi_json (~> 1.7)
       twitter-stream (~> 0.1)
-    treetop (1.4.14)
-      polyglot
-      polyglot (>= 0.3.1)
     twitter-stream (0.1.16)
       eventmachine (>= 0.12.8)
       http_parser.rb (~> 0.5.1)
       simple_oauth (~> 0.1.4)
-    tzinfo (0.3.37)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
 
 PLATFORMS
   ruby
@@ -114,6 +132,6 @@ PLATFORMS
 DEPENDENCIES
   exception_notification!
   httparty
-  rails (= 4.0.0)
+  rails (= 4.2.0)
   sqlite3
   tinder
diff --git a/test/dummy/config/initializers/secret_token.rb b/test/dummy/config/initializers/secret_token.rb
index 95e23715..ff5c7bfc 100644
--- a/test/dummy/config/initializers/secret_token.rb
+++ b/test/dummy/config/initializers/secret_token.rb
@@ -5,3 +5,4 @@
 # Make sure the secret is at least 30 characters and all random,
 # no regular words or you'll be exposed to dictionary attacks.
 Dummy::Application.config.secret_token = 'cfdf538142b0b383e722e8e7ea839b8ce6c3dc94a57856b343a2d13be66f5b690a55c991cec6e98ed60ea9b7e58265af23cb40cbadee02f13f1c45c2625f482b'
+Dummy::Application.config.secret_key_base = 'my new secret'