diff --git a/vehicle/external_cmd_converter/package.xml b/vehicle/external_cmd_converter/package.xml
index d9301e23e05fe..1b03458641538 100644
--- a/vehicle/external_cmd_converter/package.xml
+++ b/vehicle/external_cmd_converter/package.xml
@@ -5,9 +5,11 @@
   <version>0.1.0</version>
   <description>The external_cmd_converter package</description>
   <maintainer email="takamasa.horibe@tier4.jp">Takamasa Horibe</maintainer>
+  <maintainer email="eiki.nagata.2e@tier4.jp">Eiki Nagata</maintainer>
   <license>Apache License 2.0</license>
 
   <author email="takamasa.horibe@tier4.jp">Takamasa Horibe</author>
+  <author email="eiki.nagata.2@tier4.jp">Eiki Nagata</author>
 
   <buildtool_depend>ament_cmake_auto</buildtool_depend>
   <buildtool_depend>autoware_cmake</buildtool_depend>