diff --git a/hack/brew/kops.rb b/hack/brew/kops.rb
index e521a34a5b..bb35a14681 100644
--- a/hack/brew/kops.rb
+++ b/hack/brew/kops.rb
@@ -14,6 +14,7 @@ class Kops < Formula
 
   depends_on "go" => :build
   depends_on "kubernetes-cli"
+  depends_on "md5sha1sum"
 
   def install
     ENV["VERSION"] = version unless build.head?