diff --git a/Gemfile b/Gemfile
index 62704a7..7514137 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem 'activeadmin', github: 'activeadmin'
 
 # Test app stuff
 
-gem 'rails', '~> 4.0'
+gem 'rails', '~> 5.2'
 
 gem 'devise'