diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 5bbc4d1c6177b..4fea7c85e1926 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -204,7 +204,7 @@ simulator/autoware_carla_interface/** maxime.clement@tier4.jp mradityagio@gmail.
 simulator/dummy_perception_publisher/** yukihiro.saito@tier4.jp
 simulator/fault_injection/** keisuke.shima@tier4.jp
 simulator/learning_based_vehicle_model/** maxime.clement@tier4.jp nagy.tomas@tier4.jp
-simulator/simple_planning_simulator/** mamoru.sobue@tier4.jp maxime.clement@tier4.jp takamasa.horibe@tier4.jp temkei.kem@tier4.jp tomoya.kimura@tier4.jp zulfaqar.azmi@tier4.jp
+simulator/simple_planning_simulator/** mamoru.sobue@tier4.jp maxime.clement@tier4.jp takamasa.horibe@tier4.jp temkei.kem@tier4.jp tomoya.kimura@tier4.jp zulfaqar.azmi@tier4.jp kotaro.yoshimoto@tier4.jp
 simulator/tier4_dummy_object_rviz_plugin/** yukihiro.saito@tier4.jp
 simulator/vehicle_door_simulator/** isamu.takagi@tier4.jp
 system/autoware_component_monitor/** baris@leodrive.ai memin@leodrive.ai yavuz@leodrive.ai
diff --git a/simulator/simple_planning_simulator/package.xml b/simulator/simple_planning_simulator/package.xml
index fdc782182f9a5..5bd7a2f74eacc 100644
--- a/simulator/simple_planning_simulator/package.xml
+++ b/simulator/simple_planning_simulator/package.xml
@@ -10,6 +10,7 @@
   <maintainer email="mamoru.sobue@tier4.jp">Mamoru Sobue</maintainer>
   <maintainer email="zulfaqar.azmi@tier4.jp">Zulfaqar Azmi</maintainer>
   <maintainer email="temkei.kem@tier4.jp">Temkei Kem</maintainer>
+  <maintainer email="kotaro.yoshimoto@tier4.jp">Kotaro Yoshimoto</maintainer>
   <license>Apache License 2.0</license>
 
   <buildtool_depend>ament_cmake_auto</buildtool_depend>