diff --git a/Formula/headphones.rb b/Formula/headphones.rb
index 16125632dc..ddbf9e7663 100644
--- a/Formula/headphones.rb
+++ b/Formula/headphones.rb
@@ -12,6 +12,8 @@ class Headphones < Formula
     sha256 "a17c424aac1d91fb570d3e63db548c37b4c64f92ed988bb935cb4fa02c12fc5a" => :el_capitan
   end
 
+  depends_on "python@2"
+
   resource "Markdown" do
     url "https://files.pythonhosted.org/packages/b3/73/fc5c850f44af5889192dff783b7b0d8f3fe8d30b65c8e3f78f8f0265fecf/Markdown-2.6.11.tar.gz"
     sha256 "a856869c7ff079ad84a3e19cd87a64998350c2b94e9e08e44270faef33400f81"