diff --git a/system/emergency_handler/package.xml b/system/emergency_handler/package.xml
index eb87a63503988..10282297017b1 100644
--- a/system/emergency_handler/package.xml
+++ b/system/emergency_handler/package.xml
@@ -5,6 +5,8 @@
   <version>0.1.0</version>
   <description>The emergency_handler ROS 2 package</description>
   <maintainer email="makoto.kurihara@tier4.jp">Makoto Kurihara</maintainer>
+  <maintainer email="ryuta.kambe@tier4.jp">Ryuta Kambe</maintainer>
+  <maintainer email="tetsuhiro.kawaguchi@tier4.jp">Tetsuhiro Kawaguchi</maintainer>
   <license>Apache License 2.0</license>
 
   <buildtool_depend>ament_cmake_auto</buildtool_depend>