diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 32a6745f0..6233f7ce0 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -50,3 +50,4 @@ List of Contributors
 * [Hongliang Liu](https://github.com/phunterlau)
   - Hongliang is the maintainer of xgboost python PyPI package for pip installation.
 * [Huayi Zhang](https://github.com/irachex)
+* [Johan Manders](https://github.com/johanmanders)