diff --git a/Formula/pius.rb b/Formula/pius.rb
index e59d2ffcc0..40ffdc16b1 100644
--- a/Formula/pius.rb
+++ b/Formula/pius.rb
@@ -15,6 +15,7 @@ class Pius < Formula
   end
 
   depends_on "gnupg"
+  depends_on "python@2"
 
   resource "six" do
     url "https://files.pythonhosted.org/packages/16/d8/bc6316cf98419719bd59c91742194c111b6f2e85abac88e496adefaf7afe/six-1.11.0.tar.gz"