diff --git a/AUTHORS b/AUTHORS
index 6fef72b840..613b01d7c1 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -61,6 +61,7 @@ Mathieu Lonjaret <mathieu.lonjaret@gmail.com>
 Micah Stetson <micah.stetson@gmail.com>
 Michael Elkins <michael.elkins@gmail.com>
 Michael Hoisie <hoisie@gmail.com>
+Mikio Hara <mikioh.mikioh@gmail.com>
 Moriyoshi Koizumi <mozo@mozo.jp>
 Môshe van der Sterre <moshevds@gmail.com>
 Nicholas Waples <nwaples@gmail.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 0ab84599db..72907ff2c9 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -104,6 +104,7 @@ Maxim Ushakov <ushakov@google.com>
 Micah Stetson <micah.stetson@gmail.com>
 Michael Elkins <michael.elkins@gmail.com>
 Michael Hoisie <hoisie@gmail.com>
+Mikio Hara <mikioh.mikioh@gmail.com>
 Moriyoshi Koizumi <mozo@mozo.jp>
 Môshe van der Sterre <moshevds@gmail.com>
 Nicholas Waples <nwaples@gmail.com>