diff --git a/.ruby-version b/.ruby-version
index b1b25a5f..197c4d5c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.2.2
+2.4.0
diff --git a/Gemfile b/Gemfile
index 177354f9..9cb0c9f6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-ruby '2.3.5'
+ruby '2.4.0'
 
 gem 'rails', '~> 4.2'
 gem 'jquery-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index fc3068aa..a01a0856 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -172,7 +172,7 @@ GEM
     kgio (2.10.0)
     launchy (2.4.3)
       addressable (~> 2.3)
-    libv8 (3.16.14.13)
+    libv8 (3.16.14.19)
     loofah (2.1.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -327,8 +327,8 @@ GEM
     stripe_event (1.5.0)
       activesupport (>= 3.1)
       stripe (~> 1.6)
-    therubyracer (0.12.2)
-      libv8 (~> 3.16.14.0)
+    therubyracer (0.12.3)
+      libv8 (~> 3.16.14.15)
       ref
     thin (1.6.4)
       daemons (~> 1.0, >= 1.0.9)
@@ -413,7 +413,7 @@ DEPENDENCIES
   unicorn
 
 RUBY VERSION
-   ruby 2.3.5p376
+   ruby 2.4.0p0
 
 BUNDLED WITH
-   1.15.4
+   1.16.4