From 86733ee799df0fdf9035041e3755b2aaf32fce6a Mon Sep 17 00:00:00 2001
From: Ao Li <leeleo3x@gmail.com>
Date: Mon, 29 Jul 2024 11:55:19 -0400
Subject: [PATCH] update.

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 260cfbf7..b64174c4 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
 # Fray: An Efficient General-Purpose Concurrency Testing Platform for the JVM
 
+## Requirements
+
+Please make sure you have Java 21 installed. To build the native plugin, you also need to have `g++` and `cmake` installed.
+
 ## Build Fray
 
 - Run the following commands to build Fray