diff --git a/.mailmap b/.mailmap
index de22039db5..537c75be78 100644
--- a/.mailmap
+++ b/.mailmap
@@ -126,3 +126,4 @@ Doug Hellmann <doug@doughellmann.com> <doug.hellmann@dreamhost.com>
 zhangdebo1987 <zhangdebo@inspur.com> zhangdebo
 Thomas Goirand <thomas@goirand.fr> <zigo@debian.org>
 Thiago da Silva <thiagodasilva@gmail.com> <thiago@redhat.com>
+Kota Tsuyuzaki <kota.tsuyuzaki.pc@hco.ntt.co.jp> <tsuyuzaki.kota@lab.ntt.co.jp>
diff --git a/AUTHORS b/AUTHORS
index 97bcfad81d..4c7f6a49b8 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -236,7 +236,7 @@ Kenichiro Matsuda (matsuda_kenichi@jp.fujitsu.com)
 Keshava Bharadwaj (kb.sankethi@gmail.com)
 Kiyoung Jung (kiyoung.jung@kt.com)
 Koert van der Veer (koert@cloudvps.com)
-Kota Tsuyuzaki (tsuyuzaki.kota@lab.ntt.co.jp)
+Kota Tsuyuzaki (kota.tsuyuzaki.pc@hco.ntt.co.jp)
 Ksenia Demina (kdemina@mirantis.com)
 Kun Huang (gareth@unitedstack.com)
 Larry Rensing (lr699s@att.com)