diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 5bd5cc601..8473e9f2a 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -45,3 +45,5 @@ submit the change with your pull request.
 - Marlena Compton / [Marlena](https://github.com/marlena)
 - Elizabeth A. Kari / [catfriend](https://github.com/catfriend)
 - Cheri Allen / [cherimarie](https://github.com/cherimarie)
+- Shiho Takagi / [oshiho3](https:://github.com/oshiho3)
+- Maki Sugita / [macckii](https:://github.com/macckii)