diff --git a/map/autoware_lanelet2_map_validator/package.xml b/map/autoware_lanelet2_map_validator/package.xml
index b147d461..d5d16065 100644
--- a/map/autoware_lanelet2_map_validator/package.xml
+++ b/map/autoware_lanelet2_map_validator/package.xml
@@ -5,6 +5,11 @@
   <version>0.1.0</version>
   <description>Validation tool for lanelet2 maps especially for Autoware usage</description>
   <maintainer email="taiki.yamada@tier4.jp">Taiki Yamada</maintainer>
+  <maintainer email="mamoru.sobue@tier4.jp">Mamoru Sobue</maintainer>
+  <maintainer email="yamato.ando@tier4.jp">Yamato Ando</maintainer>
+  <maintainer email="masahiro.sakamoto@tier4.jp">Masahiro Sakamoto</maintainer>
+  <maintainer email="anh.nguyen.2@tier4.jp">NGUYEN Viet Anh</maintainer>
+  <maintainer email="shintaro.sakoda@tier4.jp">Shintaro Sakoda</maintainer>
   <license>Apache License 2.0</license>
 
   <buildtool_depend>ament_cmake_auto</buildtool_depend>