diff --git a/.mailmap b/.mailmap
index 0ff7365061..324d04bec8 100644
--- a/.mailmap
+++ b/.mailmap
@@ -16,3 +16,4 @@ Robby Findler       <robby@racket-lang.org>       <robby@eecs.northwestern.edu>
 Jon Rafkind         <rafkind@racket-lang.org>     <jon@jon-laptop.(none)>
 Stephen Chang       <stchang@racket-lang.org>     <stchang216@gmail.com>
 Asumu Takikawa      <asumu@racket-lang.org>       <asumu@ccs.neu.edu>
+Guillaume Marceau   <gmarceau@racket-lang.org>    <gmarceau@gmail.com>