diff --git a/Gemfile b/Gemfile
index 69a7ac4..d969e46 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,3 @@
-ruby '2.0.0'
+ruby '2.3.1'
 source 'https://rubygems.org'
 gem 'github-pages', group: :jekyll_plugins