diff --git a/app.rb b/app.rb
index 553ff71..cb62bd3 100644
--- a/app.rb
+++ b/app.rb
@@ -280,6 +280,10 @@ helpers do
       @auth.credentials and
       @auth.credentials == ["qwer", "asdf"]
   end
+
+  def hostname
+    ENV["HOSTNAME"]
+  end
 end
 
 get "/" do