diff --git a/.mailmap b/.mailmap
index 7d92aaa407..15f4146c38 100644
--- a/.mailmap
+++ b/.mailmap
@@ -130,7 +130,8 @@ Kota Tsuyuzaki <bloodeagle40234@gmail.com> <kota.tsuyuzaki.pc@hco.ntt.co.jp>
 Kota Tsuyuzaki <bloodeagle40234@gmail.com> <tsuyuzaki.kota@lab.ntt.co.jp>
 Kota Tsuyuzaki <bloodeagle40234@gmail.com> <k.tsuyuzaki@ntt.com>
 Ehud Kaldor <ehud@unfairfunction.org> <ehud@UnfairFunction.org>
-Takashi Kajinami <tkajinam@redhat.com> <kajinamit@nttdata.co.jp>
+Takashi Kajinami <kajinamit@oss.nttdata.com> <kajinamit@nttdata.co.jp>
+Takashi Kajinami <kajinamit@oss.nttdata.com> <tkajinam@redhat.com>
 Yuxin Wang <wang.yuxin@ostorage.com.cn> Wang Yuxin
 Gilles Biannic <gilles.biannic@corp.ovh.com> gillesbiannic
 melissaml <ma.lei@99cloud.net> <malei@maleideMacBook-Pro.local>