diff --git a/Gemfile b/Gemfile
index 678984f..88aec66 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,7 @@
 source 'https://rubygems.org'
 
+ruby File.read('.ruby-version').strip
+
 gem 'rails', '~> 4.2'
 gem 'rails-i18n'
 gem "rdiscount"
diff --git a/Gemfile.lock b/Gemfile.lock
index 998fea9..fb5b77c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -414,5 +414,8 @@ DEPENDENCIES
   web-console (= 2.1.3)
   whenever
 
+RUBY VERSION
+   ruby 2.3.0p0
+
 BUNDLED WITH
    1.16.1