diff --git a/Gemfile b/Gemfile
index 8c21557..f0d8eca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-ruby "2.2.3"
+ruby "2.3.3"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails"
 gem "rails", "~> 4.2.5.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index 93742de..562af4b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -413,5 +413,8 @@ DEPENDENCIES
   web-console (~> 2.0)
   webmock
 
+RUBY VERSION
+   ruby 2.3.3p222
+
 BUNDLED WITH
-   1.11.2
+   1.15.1