diff --git a/README.md b/README.md
index f3179d7..dea0a56 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ An Apple IIgs emulator based on KEGS
 # Build instructions
 
 ## OS X dependencies
-    brew install re2c sdl2 sdl2_image freetype
+    brew install cmake pkg-config re2c sdl2 sdl2_image freetype
 
 ## Linux dependencies
     apt-get install re2c libsdl2-dev libsdl2-image-dev libfreetype6-dev libpcap0.8-dev
diff --git a/doc/Developer-QuickStart-MacOSX.txt b/doc/Developer-QuickStart-MacOSX.txt
index a3f63ca..4a39e63 100644
--- a/doc/Developer-QuickStart-MacOSX.txt
+++ b/doc/Developer-QuickStart-MacOSX.txt
@@ -14,7 +14,7 @@ xcode-select --install
 /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
 
 # Use brew to install dependencies.
-brew install sdl2 sdl2_image freetype re2c cmake
+brew install cmake pkg-config re2c sdl2 sdl2_image freetype
 
 # Clone & Build.
 git clone git@github.com:digarok/gsplus.git