diff --git a/turtlebot4_description/urdf/lite/turtlebot4.urdf.xacro b/turtlebot4_description/urdf/lite/turtlebot4.urdf.xacro
index 5de1406..481be0a 100644
--- a/turtlebot4_description/urdf/lite/turtlebot4.urdf.xacro
+++ b/turtlebot4_description/urdf/lite/turtlebot4.urdf.xacro
@@ -33,4 +33,22 @@
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diff --git a/turtlebot4_description/urdf/standard/turtlebot4.urdf.xacro b/turtlebot4_description/urdf/standard/turtlebot4.urdf.xacro
index a9ddf98..c63d35c 100644
--- a/turtlebot4_description/urdf/standard/turtlebot4.urdf.xacro
+++ b/turtlebot4_description/urdf/standard/turtlebot4.urdf.xacro
@@ -124,4 +124,21 @@
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