diff --git a/Gemfile b/Gemfile
index 1840121..1ee890a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '4.0.2'
+gem 'rails', '5.2.8.1'
 
 # use postgress
 gem 'pg'