diff --git a/mruby-logo.md b/mruby-logo.md
index 2b52c53..e4f7e12 100644
--- a/mruby-logo.md
+++ b/mruby-logo.md
@@ -26,6 +26,8 @@ Vote:
 * [scalone](https://github.com/scalone)
 * [agarie](https://github.com/agarie)
 * [tsahara](https://github.com/tsahara)
+* [mattn](https://github.com/mattn) :+1:
+
 
 ***