diff --git a/README.md b/README.md
index 4c6ef6c..192e349 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ For detailed information on each feature, please refer to the [GitHub Wiki](http
 Place one of the following tools in the `./lib/` directory:
 
 - **mp4decrypt:** Available at [Bento4](https://www.bento4.com/downloads/)
-- **shaka-packager:** Available at [Shaka Packager Releases](https://github.com/shaka-project/shaka-packager/releases/latest)
+- **shaka-packager:** Available at [Shaka Packager Releases](https://github.com/shaka-project/shaka-packager/releases/latest) ⚠️ Version 3.x is not working correctly — use v2.6.1 instead 
 
 ### 2. Acquire Widevine CDM Files