diff --git a/Formula/elm-format.rb b/Formula/elm-format.rb
index ff3605e7e607f..f497bf4bfdd8a 100644
--- a/Formula/elm-format.rb
+++ b/Formula/elm-format.rb
@@ -2,8 +2,8 @@ class ElmFormat < Formula
   desc "Elm source code formatter, inspired by gofmt"
   homepage "https://github.com/avh4/elm-format"
   url "https://github.com/avh4/elm-format.git",
-      tag:      "0.8.4",
-      revision: "5bd4fbe591fe8b456160c180cb875ef60bc57890"
+      tag:      "0.8.5",
+      revision: "80f15d85ee71e1663c9b53903f2b5b2aa444a3be"
   license "BSD-3-Clause"
   head "https://github.com/avh4/elm-format.git"
 
@@ -15,7 +15,9 @@ class ElmFormat < Formula
   end
 
   depends_on "cabal-install" => :build
-  depends_on "ghc@8.8" => :build
+  depends_on "ghc" => :build
+  depends_on "gnu-tar" => :build
+  depends_on "pkg-config" => :build
 
   def build_elm_format_conf
     <<~EOS
@@ -27,6 +29,7 @@ module Build_elm_format where
   end
 
   def install
+    ENV.prepend_path "PATH", Formula["gnu-tar"].opt_libexec/"gnubin"
     defaults = buildpath/"generated/Build_elm_format.hs"
     defaults.write(build_elm_format_conf)