diff --git a/Formula/hh.rb b/Formula/hh.rb
index b218e2e28d..02540aa91c 100644
--- a/Formula/hh.rb
+++ b/Formula/hh.rb
@@ -14,9 +14,9 @@ class Hh < Formula
 
   head do
     url "https://github.com/dvorka/hstr.git"
-    depends_on :autoconf
-    depends_on :automake
-    depends_on :libtool
+    depends_on "autoconf" => :build
+    depends_on "automake" => :build
+    depends_on "libtool" => :build
   end
 
   depends_on "readline"