diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 09705d1..f0dc380 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1,2 +1,8 @@
 class ApplicationController < ActionController::Base
+  if ENV["BASIC_AUTH_USERNAME"] && ENV["BASIC_AUTH_PASSWORD"]
+    http_basic_authenticate_with(
+      name: ENV.fetch("BASIC_AUTH_USERNAME"),
+      password: ENV.fetch("BASIC_AUTH_PASSWORD"),
+    )
+  end
 end