diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 3857e3e..fc9f5d2 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -26,6 +26,7 @@
 
 # Please keep the list sorted.
 
+Hidetoshi Shimokawa <smkwhdts@gmail.com>
 Marc-Antoine Ruel <maruel@chromium.org> <maruel@gmail.com>
 Max Ekman <max@looplab.se>
 Matias Insaurralde <matias@insaurral.de>