diff --git a/README.md b/README.md
index b520700..0de51eb 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,7 @@
 ```shell
 sudo apt-get install \
 	build-essential \
+	pkg-config \
 	checkinstall \
 	git \
 	autoconf \
@@ -191,4 +192,4 @@
 This project is an independent software and has not been authorized, sponsored,
 or otherwise approved by Apple Inc.
 
-README Updated on: 2021-08-30
+README Updated on: 2022-04-04