diff --git a/spine-unity/README.md b/spine-unity/README.md
index a41c052fc..36802a045 100644
--- a/spine-unity/README.md
+++ b/spine-unity/README.md
@@ -32,6 +32,8 @@ Download and run this Unity package:
 
 In the `Assets/Examples/Scenes` folder you will find many example scenes that demonstrate various spine-unity features.
 
+> Note: If you are still using Spine 2.1.xx, you'll need to use the older 2.1.xx compatible runtime. You can find it here: [spine-unity-v2.unitypackage](http://esotericsoftware.com/files/runtimes/unity/spine-unity-v2.unitypackage)
+
 ## Manual installation
 
 You can also choose to setup and run from the Git files: