diff --git a/Formula/archey.rb b/Formula/archey.rb
index 4394c8520b9..6be37775815 100644
--- a/Formula/archey.rb
+++ b/Formula/archey.rb
@@ -26,6 +26,8 @@ class Archey < Formula
 
   deprecate! date: "2017-04-28", because: :repo_archived
 
+  depends_on :macos
+
   conflicts_with "archey4", because: "both install `archey` binaries"
 
   def install