diff --git a/src/doc/rustc-dev-guide/.mailmap b/src/doc/rustc-dev-guide/.mailmap
index 1a1f6ffb6084..907495ed10d5 100644
--- a/src/doc/rustc-dev-guide/.mailmap
+++ b/src/doc/rustc-dev-guide/.mailmap
@@ -3,3 +3,4 @@ Jynn Nelson <github@jyn.dev> <joshua@yottadb.com>
 Jynn Nelson <github@jyn.dev> <jyn.nelson@redjack.com>
 Jynn Nelson <github@jyn.dev> <jnelson@cloudflare.com>
 Jynn Nelson <github@jyn.dev>
+Tshepang Mbambo <hopsi@tuta.io> <tshepang@gmail.com>