diff --git a/README.md b/README.md
index d0d0c9f..dee6de1 100755
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ that OpenCV 3.x is not yet fully supported.
 Install OpenCV using brew
 ```bash
 brew tap homebrew/science
+brew install pkg-config
 brew install opencv@2
 brew link --force opencv@2
 ```