diff --git a/README.md b/README.md
index a817a1f9..eb6f989d 100644
--- a/README.md
+++ b/README.md
@@ -359,7 +359,7 @@ Follow these steps to generate the `llgo` command (its usage is the same as the
 
 ```sh
 brew update
-brew install llvm@18 bdw-gc openssl cjson libffi
+brew install llvm@18 bdw-gc openssl cjson libffi pkg-config
 brew install python@3.12 # optional
 brew link --force libffi
 go install -v github.com/goplus/llgo/cmd/llgo@latest