diff --git a/README.md b/README.md
index 388353652b..49e34c52f9 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,8 @@ Run `build.cmd /t:Test` or `build.sh /t:Test`
 ## Run end-to-end tests
 
 Prerequisites:
-- Install [selenium-standalone](https://www.npmjs.com/package/selenium-standalone) (requires Java 8 or later)
+- Install [selenium-standalone](https://www.npmjs.com/package/selenium-standalone) (requires Java 8 or 9)
+  - [Open JDK9](http://jdk.java.net/java-se-ri/9)
   - `npm install -g selenium-standalone`
   - `selenium-standalone install`
 - Chrome