Update README.md

Author: johspaeth

README.md

@@ -6,7 +6,7 @@ This repository contains a tool to detect if a jar file is affected by the criti
 
 ## How to run this tool
 
-1. Download the [jar file](https://github.com/CodeShield-Security/Log4JShell-Bytecode-Detector/releases/download/v0.2/Log4JDetector-0.2-jar-with-dependencies.jar) under releases. 
+1. Download the [jar file](https://github.com/CodeShield-Security/Log4JShell-Bytecode-Detector/releases/download/v0.4/Log4JDetector-0.4-jar-with-dependencies.jar) under releases. 
 2. Run `java -cp <PATH_TO_DOWNLOADED_JAR> de.codeshield.log4jshell.Log4JDetector <ABSOLUTE_PATH_TO_JAR_TO_CHECK>`