diff --git a/Formula/dosbox-x.rb b/Formula/dosbox-x.rb
index 989c76a091..0d7dadb4ab 100644
--- a/Formula/dosbox-x.rb
+++ b/Formula/dosbox-x.rb
@@ -1,8 +1,8 @@
 class DosboxX < Formula
   desc "DOSBox with accurate emulation and wide testing"
   homepage "https://dosbox-x.com/"
-  url "https://github.com/joncampbell123/dosbox-x/archive/dosbox-x-v0.82.15.tar.gz"
-  sha256 "60e196ee49e4532327d0786a9e3b4f1d28820906b0b868abecf89a19300fb3da"
+  url "https://github.com/joncampbell123/dosbox-x/archive/dosbox-x-v0.82.21.tar.gz"
+  sha256 "2b5ddf9fc86bd6ff55b3bfdc2984c87698939583e9f8956d552ae922eb4fcb3d"
   version_scheme 1
   head "https://github.com/joncampbell123/dosbox-x.git"
 
@@ -17,6 +17,7 @@ class DosboxX < Formula
   depends_on "autoconf" => :build
   depends_on "automake" => :build
   depends_on "fluid-synth"
+  depends_on :macos => :high_sierra # needs futimens
 
   def install
     ENV.cxx11