diff --git a/.ruby-version b/.ruby-version
index b10a31cf1cc42c37b10edae1af9614d573dee688..782b12654fd394a93cd6ea3d487cc60b918a9073 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1,2 +1,2 @@
-ruby-2.3.1
+ruby-2.4.1
 
diff --git a/Gemfile b/Gemfile
index 9984d53d3efb0da3d5e966997dbca241663494da..7946a66b9af442a4dbb99b7537d0e17202758118 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '2.3.1'
+ruby '2.4.1'
 
 gem 'activesupport'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index a7a92dcd4e0353bf36314ea0d3fd2727b600ff2b..f7a24708956c4237e52f99fd77b758e2a4a5c3e2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -120,7 +120,7 @@ DEPENDENCIES
   webmock
 
 RUBY VERSION
-   ruby 2.3.1p112
+   ruby 2.4.1p111
 
 BUNDLED WITH
-   1.14.6
+   1.15.1