diff --git a/AUTHORS b/AUTHORS
index 561c67be..3d9d1df4 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -17,6 +17,7 @@ Evgeny Safronov <division494@gmail.com>
 Felix Homann <linuxaudio@showlabor.de>
 Google Inc.
 JianXiong Zhou <zhoujianxiong2@gmail.com>
+Kaito Udagawa <umireon@gmail.com>
 Lei Xu <eddyxu@gmail.com>
 Matt Clarkson <mattyclarkson@gmail.com>
 Oleksandr Sochka <sasha.sochka@gmail.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 5616976d..42d713bc 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -31,6 +31,7 @@ Eugene Zhuk <eugene.zhuk@gmail.com>
 Evgeny Safronov <division494@gmail.com>
 Felix Homann <linuxaudio@showlabor.de>
 JianXiong Zhou <zhoujianxiong2@gmail.com>
+Kaito Udagawa <umireon@gmail.com>
 Lei Xu <eddyxu@gmail.com>
 Matt Clarkson <mattyclarkson@gmail.com>
 Oleksandr Sochka <sasha.sochka@gmail.com>