diff --git a/package.xml b/package.xml
index 9e9bd20f..c2fa4780 100644
--- a/package.xml
+++ b/package.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <package format="2">
   <name>esp_now_ros</name>
-  <version>0.3.1</version>
+  <version>0.4.1</version>
   <description>The esp_now_ros package</description>
 
   <maintainer email="shinjo@jsk.imi.i.u-tokyo.ac.jp">Koki Shinjo</maintainer>