diff --git a/.ruby-version b/.ruby-version
index b1b25a5..5859406 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.2.2
+2.2.3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1ccc171..49ffd20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Unreleased
 
+* Update Rails to 4.2.4 and Ruby to 2.2.3
+  ([#193](https://github.com/fs/rails-base-api/pull/193))
 * Sync Rubocop rules with Rails-Base
 * Replace custom token authentication strategy with [simple_token_authentication](https://github.com/gonzalo-bulnes/simple_token_authentication)
   ([#184](https://github.com/fs/rails-base-api/pull/184))
diff --git a/Gemfile b/Gemfile
index 7f36e8e..aa6560e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,9 +1,9 @@
 source "https://rubygems.org"
 
-ruby "2.2.2"
+ruby "2.2.3"
 
 # the most important stuff
-gem "rails", "4.2.3"
+gem "rails", "4.2.4"
 gem "pg"
 gem "rails-api"
 gem "rails_api_format", path: "lib/rails_api_format"
diff --git a/Gemfile.lock b/Gemfile.lock
index 9ea617c..eda4037 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,36 +17,36 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.2.3)
-      actionpack (= 4.2.3)
-      actionview (= 4.2.3)
-      activejob (= 4.2.3)
+    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 (4.2.3)
-      actionview (= 4.2.3)
-      activesupport (= 4.2.3)
+    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 (4.2.3)
-      activesupport (= 4.2.3)
+    actionview (4.2.4)
+      activesupport (= 4.2.4)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    activejob (4.2.3)
-      activesupport (= 4.2.3)
+    activejob (4.2.4)
+      activesupport (= 4.2.4)
       globalid (>= 0.3.0)
-    activemodel (4.2.3)
-      activesupport (= 4.2.3)
+    activemodel (4.2.4)
+      activesupport (= 4.2.4)
       builder (~> 3.1)
-    activerecord (4.2.3)
-      activemodel (= 4.2.3)
-      activesupport (= 4.2.3)
+    activerecord (4.2.4)
+      activemodel (= 4.2.4)
+      activesupport (= 4.2.4)
       arel (~> 6.0)
-    activesupport (4.2.3)
+    activesupport (4.2.4)
       i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
@@ -141,15 +141,15 @@ GEM
       addressable (~> 2.3)
     letter_opener (1.2.0)
       launchy (~> 2.2)
-    loofah (2.0.2)
+    loofah (2.0.3)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
     mail_safe (0.3.1)
       actionmailer (>= 1.3.6)
-    mime-types (2.6.1)
+    mime-types (2.6.2)
     mini_portile (0.6.2)
-    minitest (5.8.0)
+    minitest (5.8.1)
     multi_json (1.11.2)
     mustache (0.99.8)
     nokogiri (1.6.6.2)
@@ -163,23 +163,23 @@ GEM
     rack-cors (0.2.9)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.3)
-      actionmailer (= 4.2.3)
-      actionpack (= 4.2.3)
-      actionview (= 4.2.3)
-      activejob (= 4.2.3)
-      activemodel (= 4.2.3)
-      activerecord (= 4.2.3)
-      activesupport (= 4.2.3)
+    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 (= 4.2.3)
+      railties (= 4.2.4)
       sprockets-rails
     rails-api (0.4.0)
       actionpack (>= 3.2.11)
       railties (>= 3.2.11)
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.6)
+    rails-dom-testing (1.0.7)
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6.0)
       rails-deprecated_sanitizer (>= 1.0.1)
@@ -199,9 +199,9 @@ GEM
       ruby-progressbar
     rails_serve_static_assets (0.0.1)
     rails_stdout_logging (0.0.3)
-    railties (4.2.3)
-      actionpack (= 4.2.3)
-      activesupport (= 4.2.3)
+    railties (4.2.4)
+      actionpack (= 4.2.4)
+      activesupport (= 4.2.4)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (2.0.0)
@@ -270,9 +270,9 @@ GEM
     spring (1.3.6)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
-    sprockets (3.2.0)
-      rack (~> 1.0)
-    sprockets-rails (2.3.2)
+    sprockets (3.4.0)
+      rack (> 1, < 3)
+    sprockets-rails (2.3.3)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
@@ -319,7 +319,7 @@ DEPENDENCIES
   mail_safe
   pg
   rack-cors
-  rails (= 4.2.3)
+  rails (= 4.2.4)
   rails-api
   rails_12factor
   rails_api_format!
@@ -337,3 +337,6 @@ DEPENDENCIES
   spring-commands-rspec
   thin
   webmock
+
+BUNDLED WITH
+   1.10.6
diff --git a/README.md b/README.md
index a426e9d..989ae53 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 
 This simple application includes ruby/rails technology which we use at FlatStack for new REST API projects.
 
-Application currently based on Rails 4 stable branch and Ruby 2.1
+Application currently based on Rails 4 stable branch and Ruby 2.2
 
 ## API