diff --git a/config/environments/development.rb b/config/environments/development.rb
index c2434c8c..bf96e5b2 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -75,6 +75,7 @@ Rails.application.configure do
   # Use an evented file watcher to asynchronously detect changes in source code,
   # routes, locales, etc. This feature depends on the listen gem.
   # config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+  config.hosts += ENV["EXTRA_HOSTS"].split(':') if ENV["EXTRA_HOSTS"].present?
 end
 
 # For better_errors to work inside Docker we need