diff --git a/Formula/mackup.rb b/Formula/mackup.rb
index bde3cd1bcf..28535f696f 100644
--- a/Formula/mackup.rb
+++ b/Formula/mackup.rb
@@ -1,17 +1,19 @@
-require 'formula'
+require "formula"
 
 class Mackup < Formula
-  homepage 'https://github.com/lra/mackup'
-  url 'https://github.com/lra/mackup/archive/0.7.3.tar.gz'
-  sha1 'c0d03ebd1232da760358dc01d9760a8ec819f727'
+  homepage "https://github.com/lra/mackup"
+  url "https://github.com/lra/mackup/archive/0.7.4.tar.gz"
+  sha1 "6de195ec94018c0e225f115278a9f8d720ad5c75"
 
-  head 'https://github.com/lra/mackup.git'
+  head "https://github.com/lra/mackup.git"
 
   def install
-    system 'python', 'setup.py', 'install', "--prefix=#{prefix}"
+    system "python", "setup.py", "install", "--prefix=#{prefix}",
+                     "--single-version-externally-managed",
+                     "--record=installed.txt"
   end
 
   test do
-    system "#{bin}/mackup", '--help'
+    system "#{bin}/mackup", "--help"
   end
 end