diff --git a/elevator_system_msgs/package.xml b/elevator_system_msgs/package.xml
index 6d70427..97bb070 100644
--- a/elevator_system_msgs/package.xml
+++ b/elevator_system_msgs/package.xml
@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>elevator_system_msgs</name>
-  <version>3.0.0</version>
+  <version>4.0.0</version>
   <description>interfaces for elevator are defined</description>
   <maintainer email="sungkyu.kang@lge.com">Sungkyu Kang</maintainer>
   <maintainer email="hyunseok7.yang@lge.com">Hyunseok Yang</maintainer>
diff --git a/perception_msgs/package.xml b/perception_msgs/package.xml
index e58f75e..2399902 100644
--- a/perception_msgs/package.xml
+++ b/perception_msgs/package.xml
@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>perception_msgs</name>
-  <version>3.0.0</version>
+  <version>4.0.0</version>
   <description>interfaces for ground truth</description>
   <maintainer email="hyunseok7.yang@lge.com">Hyunseok Yang</maintainer>