diff --git a/Tools.md b/Tools.md
index bd68071..dfc27d9 100644
--- a/Tools.md
+++ b/Tools.md
@@ -2,8 +2,8 @@ The following services are used to help run the Tracks project:
 
 | Service | Function | Administrators |
 | ------- | -------- | -------------- |
-| [GitHub](https://github.com/TracksApp) | source, issues, wiki, website | @bsag, @lrbalt, @dnrce |
-| [Google Groups](http://groups.google.com/group/TracksApp) | mailing list | @lrbalt, @dnrce |
+| [GitHub](https://github.com/TracksApp) | source, issues, wiki, website | @bsag, @lrbalt, @dnrce, @mattr- |
+| [Google Groups](http://groups.google.com/group/TracksApp) | mailing list | @lrbalt, @dnrce, @mattr- |
 | [Namecheap](https://www.namecheap.com/) | getontracks.org domain registration | @dnrce, @lrbalt |
 | [Travis CI](https://travis-ci.org/TracksApp/tracks) | continuous integration | _same as GitHub_ |
 | [Code Climate](https://codeclimate.com/github/TracksApp/tracks) | code quality analysis | _same as GitHub_ |