Merge pull request #3523 from vespa-engine/gjoranv/maven-version

Maven 3.3.9 or later is required for container-deps-enforcer.

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 51ecc5fb02e..762990a3127 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Travis-CI build status: [![Build Status](https://travis-ci.org/vespa-engine/vesp
 ## Get started developing
 
 ### Setup build environment
-C++ building is supported on CentOS 7. The Java source can be built on any platform having Java 8 and Maven installed. 
+C++ building is supported on CentOS 7. The Java source can be built on any platform having Java 8 and Maven (version>=3.3) installed. 
 We recommend using the following environment: [Create C++ dev environment on CentOS using VirtualBox and Vagrant](vagrant/README.md).
 You can also setup CentOS 7 natively and install the following build dependencies: