diff --git a/.ruby-version b/.ruby-version
index 00355e29d1..79a614418f 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.3.7
+2.4.4
diff --git a/Gemfile b/Gemfile
index 59b5dcf62a..3fefa56bbc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby "2.3.7"
+ruby "2.4.4"
 git_source(:github) { |repo_name| "https://github.com/#{repo_name}.git" }
 
 gem 'i18n'
diff --git a/Gemfile.lock b/Gemfile.lock
index ff721252e8..f4e59c0975 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -842,7 +842,7 @@ DEPENDENCIES
   wkhtmltopdf-binary
 
 RUBY VERSION
-   ruby 2.3.7p456
+   ruby 2.4.4p296
 
 BUNDLED WITH
    1.17.3