diff --git a/doc/maintainers.md b/doc/maintainers.md
index e31ac25531..fa2c24140b 100644
--- a/doc/maintainers.md
+++ b/doc/maintainers.md
@@ -348,6 +348,7 @@ have commit right, others don't.
 #### ext/json
 * NARUSE, Yui (naruse)
 * Hiroshi SHIBATA (hsbt)
+* Jean Boussier (byroot)
 * https://github.com/ruby/json
 * https://rubygems.org/gems/json