diff --git a/README.md b/README.md
index ea18bf9..4449fb8 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@
 
 ## Usage
 
+* https://3.jetbra.in/
+
 * download from the [releases page](https://gitee.com/ja-netfilter/ja-netfilter/releases)
 * add `-javaagent:/absolute/path/to/ja-netfilter.jar` argument (**Change to your actual path**)
     * add as an argument of the `java` command. eg: `java -javaagent:/absolute/path/to/ja-netfilter.jar -jar executable_jar_file.jar`