diff --git a/map/map_loader/package.xml b/map/map_loader/package.xml
index 1f1f258b1fec5..05ab4885c4edf 100644
--- a/map/map_loader/package.xml
+++ b/map/map_loader/package.xml
@@ -5,7 +5,9 @@
   <version>0.1.0</version>
   <description>The map_loader package</description>
   <maintainer email="ryohsuke.mitsudome@tier4.jp">Ryohsuke Mitsudome</maintainer>
-  <maintainer email="kenji.miyake@tier4.jp">Kenji Miyake</maintainer>
+  <maintainer email="ryu.yamamoto@tier4.jp">Ryu Yamamoto</maintainer>
+  <maintainer email="koji.minoda@tier4.jp">Koji Minoda</maintainer>
+
   <license>Apache License 2.0</license>
 
   <buildtool_depend>ament_cmake_auto</buildtool_depend>