diff --git a/launch/tier4_map_launch/package.xml b/launch/tier4_map_launch/package.xml
index 8fb41076204a8..05643e354cfce 100644
--- a/launch/tier4_map_launch/package.xml
+++ b/launch/tier4_map_launch/package.xml
@@ -4,7 +4,6 @@
   <name>tier4_map_launch</name>
   <version>0.1.0</version>
   <description>The tier4_map_launch package</description>
-  <maintainer email="ryohsuke.mitsudome@tier4.jp">Ryohsuke Mitsudome</maintainer>
   <maintainer email="ryu.yamamoto@tier4.jp">Ryu Yamamoto</maintainer>
   <maintainer email="koji.minoda@tier4.jp">Koji Minoda</maintainer>
   <maintainer email="kento.yabuuchi.2@tier4.jp">Kento Yabuuchi</maintainer>
@@ -14,6 +13,8 @@
   <maintainer email="shintaro.sakoda@tier4.jp">Shintaro Sakoda</maintainer>
   <maintainer email="masahiro.sakamoto@tier4.jp">Masahiro Sakamoto</maintainer>
   <license>Apache License 2.0</license>
+  <author email="ryohsuke.mitsudome@tier4.jp">Ryohsuke Mitsudome</author>
+  <author email="yamato.ando@tier4.jp">Yamato Ando</author>
 
   <buildtool_depend>ament_cmake_auto</buildtool_depend>
   <buildtool_depend>autoware_cmake</buildtool_depend>
diff --git a/map/map_loader/package.xml b/map/map_loader/package.xml
index 4eaf8600dcab4..a6f4ac7f81275 100644
--- a/map/map_loader/package.xml
+++ b/map/map_loader/package.xml
@@ -4,7 +4,6 @@
   <name>map_loader</name>
   <version>0.1.0</version>
   <description>The map_loader package</description>
-  <maintainer email="ryohsuke.mitsudome@tier4.jp">Ryohsuke Mitsudome</maintainer>
   <maintainer email="yamato.ando@tier4.jp">Yamato Ando</maintainer>
   <maintainer email="ryu.yamamoto@tier4.jp">Ryu Yamamoto</maintainer>
   <maintainer email="koji.minoda@tier4.jp">Koji Minoda</maintainer>
@@ -15,6 +14,8 @@
   <maintainer email="shintaro.sakoda@tier4.jp">Shintaro Sakoda</maintainer>
 
   <license>Apache License 2.0</license>
+  <author email="ryohsuke.mitsudome@tier4.jp">Ryohsuke Mitsudome</author>
+  <author email="koji.minoda@tier4.jp">Koji Minoda</author>
 
   <buildtool_depend>ament_cmake_auto</buildtool_depend>
   <buildtool_depend>autoware_cmake</buildtool_depend>
diff --git a/map/util/lanelet2_map_preprocessor/package.xml b/map/util/lanelet2_map_preprocessor/package.xml
index 421f04257de67..e84bd8a80c202 100644
--- a/map/util/lanelet2_map_preprocessor/package.xml
+++ b/map/util/lanelet2_map_preprocessor/package.xml
@@ -4,7 +4,6 @@
   <name>lanelet2_map_preprocessor</name>
   <version>0.1.0</version>
   <description>The lanelet2_map_preprocessor package</description>
-  <maintainer email="ryohsuke.mitsudome@tier4.jp">Ryohsuke Mitsudome</maintainer>
   <maintainer email="yamato.ando@tier4.jp">Yamato Ando</maintainer>
   <maintainer email="kento.yabuuchi.2@tier4.jp">Kento Yabuuchi</maintainer>
   <maintainer email="masahiro.sakamoto@tier4.jp">Masahiro Sakamoto</maintainer>