diff --git a/users_comments.md b/users_comments.md
index 96c8c56d..7779b2c8 100644
--- a/users_comments.md
+++ b/users_comments.md
@@ -152,6 +152,9 @@ Dear AtsushiSakai,
Hello! YOUR CODE IS SUPER SUPER HELPFUL AND GIVES ME CLEA
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+Hi AtsushiSakai,
Thanks for creating the pythonrobotics repo! It's an awesome repo that has been of great help to me. I've referenced your extended kalman filter algorithm while creating my own for localization using a 2D lidar, camera, and IMU. Our robot is destined to compete soon, so fingers crossed that all works out! Thanks again.
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