diff --git a/Brewfile b/Brewfile
index 5d79b0b..b1a0898 100644
--- a/Brewfile
+++ b/Brewfile
@@ -1,4 +1,5 @@
 tap "heroku/brew"
+tap "phinze/cask"
 tap "homebrew/core"
 tap "homebrew/bundle"
 tap "homebrew/services"
@@ -10,9 +11,7 @@ brew "chisel"
 brew "clang-format"
 brew "cloc"
 brew "ffmpeg", args: ["with-freetype"]
-brew "ghostscript"
 brew "git"
-brew "go"
 brew "graphicsmagick"
 brew "graphviz"
 brew "htop"
@@ -20,13 +19,13 @@ brew "hub"
 brew "jq"
 brew "mergepbx"
 brew "most"
-brew "nmap"
+brew "ruby-build"
+brew "rbenv"
 brew "s3cmd"
 brew "terminal-notifier"
 brew "terraform"
 brew "unrar"
 brew "wget"
 brew "xcproj"
-brew "zlib"
-brew "zsh"
 brew "heroku/brew/heroku"
+cask "phinze/cask/android-platform-tools"