diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index f8839aeeb87a9..10b247ae8eb17 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -69,6 +69,7 @@ We do encourage everyone to work anything they are interested in.
 ## Reviewers
 
 - [Aditya Atluri](https://github.com/adityaatluri): @adityaatluri
+- [Matthew Barrett](https://github.com/mbaret): @mbaret
 - [Arnaud Bergeron](https://github.com/abergeron): @abergeron
 - [Tianqi Chen](https://github.com/tqchen): @tqchen
 - [Liangfu Chen](https://github.com/liangfu): @liangfu