diff --git a/.ruby-version b/.ruby-version
index cd57a8b95d..63a1a1ca3c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.1.5
+2.1.9
diff --git a/Gemfile b/Gemfile
index 7bbb9ec677..572dcd9697 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby "2.1.5"
+ruby "2.1.9"
 git_source(:github) { |repo_name| "https://github.com/#{repo_name}.git" }
 
 gem 'i18n', '~> 0.6.11'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5be37db0e7..f273b945a0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -829,7 +829,7 @@ DEPENDENCIES
   wkhtmltopdf-binary
 
 RUBY VERSION
-   ruby 2.1.5p273
+   ruby 2.1.9p490
 
 BUNDLED WITH
    1.17.2