diff --git a/AUTHORS b/AUTHORS
index cafa927ac5..aac4f70895 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -391,6 +391,7 @@ Tad Glines <tad.glines@gmail.com>
 Taj Khattra <taj.khattra@gmail.com>
 Tarmigan Casebolt <tarmigan@gmail.com>
 Taru Karttunen <taruti@taruti.net>
+Tetsuo Kiso <tetsuokiso9@gmail.com>
 Thomas Alan Copeland <talan.copeland@gmail.com>
 Thomas Kappler <tkappler@gmail.com>
 Timo Savola <timo.savola@gmail.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index d59775de7d..3a18f7e225 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -538,6 +538,7 @@ Tad Glines <tad.glines@gmail.com>
 Taj Khattra <taj.khattra@gmail.com>
 Tarmigan Casebolt <tarmigan@gmail.com>
 Taru Karttunen <taruti@taruti.net>
+Tetsuo Kiso <tetsuokiso9@gmail.com>
 Thomas Alan Copeland <talan.copeland@gmail.com>
 Thomas Habets <habets@google.com>
 Thomas Kappler <tkappler@gmail.com>