diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 296304e67..754df49a9 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -11,6 +11,7 @@ Anton Mazkovoi
 Arnaud Vandyck
 Arnout J. Kuiper
 Aslak Hellesøy
+Atsuhiko Yamanaka
 Avik Sengupta
 Balazs Fejes 2
 Ben Galbraith