diff --git a/README.md b/README.md
index a59f134..7d10e93 100644
--- a/README.md
+++ b/README.md
@@ -106,7 +106,7 @@ mkdir -p .mvn
 echo -Pmight-produce-incrementals >> .mvn/maven.config
 ```
 
-Finally, configure `git-changelist-maven-extension` in `.mvn/extensions.xml`:
+Finally, configure `git-changelist-maven-extension` in `.mvn/extensions.xml`. (Update the version to the latest version for this tool.):
 
 ```xml
 <extensions xmlns="http://maven.apache.org/EXTENSIONS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/EXTENSIONS/1.0.0 http://maven.apache.org/xsd/core-extensions-1.0.0.xsd">