GitLab 4.x requires GitLab 6.3+

CHANGELOG

@@ -5,6 +5,7 @@ v4.0.0
   - Use http cloning for builds instead of deploy keys
   - Allow choose between git clone and git fetch when get code for build
   - Make build timeout actually works
+  - Requires GitLab 6.3 or higher
 v3.2.0
   - Limit visibility of projects by gitlab authorized projects

README.md

@@ -16,10 +16,11 @@ GitLab CI officially supports (recent versions of) these Linux distributions:
 Additionally GitLab CI requires:
-* GitLab 6.0+
+* GitLab 6.3+
 * ruby 1.9.3
 * MySQL or PostgreSQL
+
 __If you want to use GitLab CI without GitLab or with older versions of GitLab you need to use [2-2-stable](https://github.com/gitlabhq/gitlab-ci/tree/2-2-stable#gitlab-ci-is-an-open-source-continuous-integration-server)__
 ### Limitations