diff --git a/planning/autoware_path_generator/README.md b/planning/autoware_path_generator/README.md
index d570108fe6..42fed2c1e6 100644
--- a/planning/autoware_path_generator/README.md
+++ b/planning/autoware_path_generator/README.md
@@ -72,7 +72,7 @@ stop
 
 | Name            | Type                                       | Description    | QoS Durability |
 | :-------------- | :----------------------------------------- | :------------- | :------------- |
-| `~/output/path` | `tier4_planning_msgs::msg::PathWithLaneId` | generated path | `volatile`     |
+| `~/output/path` | `autoware_internal_planning_msgs::msg::PathWithLaneId` | generated path | `volatile`     |
 
 ## Parameters
 
diff --git a/planning/autoware_path_generator/include/autoware/path_generator/utils.hpp b/planning/autoware_path_generator/include/autoware/path_generator/utils.hpp
index b582eda3a4..c684b32418 100644
--- a/planning/autoware_path_generator/include/autoware/path_generator/utils.hpp
+++ b/planning/autoware_path_generator/include/autoware/path_generator/utils.hpp
@@ -17,7 +17,7 @@
 
 #include "autoware/path_generator/common_structs.hpp"
 
-#include <tier4_planning_msgs/msg/path_with_lane_id.hpp>
+#include <autoware_internal_planning_msgs/msg/path_with_lane_id.hpp>
 
 #include <optional>
 #include <utility>
@@ -25,8 +25,8 @@
 
 namespace autoware::path_generator
 {
-using tier4_planning_msgs::msg::PathPointWithLaneId;
-using tier4_planning_msgs::msg::PathWithLaneId;
+using autoware_internal_planning_msgs::msg::PathPointWithLaneId;
+using autoware_internal_planning_msgs::msg::PathWithLaneId;
 
 namespace utils
 {
diff --git a/planning/autoware_path_generator/package.xml b/planning/autoware_path_generator/package.xml
index 32c872d3c5..f3fef3f60d 100644
--- a/planning/autoware_path_generator/package.xml
+++ b/planning/autoware_path_generator/package.xml
@@ -16,6 +16,7 @@
   <buildtool_depend>ament_cmake_auto</buildtool_depend>
   <buildtool_depend>autoware_cmake</buildtool_depend>
 
+  <depend>autoware_internal_planning_msgs</depend>
   <depend>autoware_lanelet2_extension</depend>
   <depend>autoware_motion_utils</depend>
   <depend>autoware_trajectory</depend>
@@ -23,7 +24,6 @@
   <depend>generate_parameter_library</depend>
   <depend>rclcpp</depend>
   <depend>rclcpp_components</depend>
-  <depend>tier4_planning_msgs</depend>
 
   <export>
     <build_type>ament_cmake</build_type>
diff --git a/planning/autoware_path_generator/src/node.hpp b/planning/autoware_path_generator/src/node.hpp
index dd765294fa..27949d3878 100644
--- a/planning/autoware_path_generator/src/node.hpp
+++ b/planning/autoware_path_generator/src/node.hpp
@@ -21,20 +21,20 @@
 #include <autoware/universe_utils/ros/polling_subscriber.hpp>
 #include <path_generator_parameters.hpp>
 
+#include <autoware_internal_planning_msgs/msg/path_with_lane_id.hpp>
 #include <autoware_map_msgs/msg/lanelet_map_bin.hpp>
 #include <autoware_planning_msgs/msg/lanelet_route.hpp>
 #include <nav_msgs/msg/odometry.hpp>
-#include <tier4_planning_msgs/msg/path_with_lane_id.hpp>
 
 #include <memory>
 namespace autoware::path_generator
 {
+using autoware_internal_planning_msgs::msg::PathPointWithLaneId;
+using autoware_internal_planning_msgs::msg::PathWithLaneId;
 using autoware_map_msgs::msg::LaneletMapBin;
 using autoware_planning_msgs::msg::LaneletRoute;
 using nav_msgs::msg::Odometry;
 using ::path_generator::Params;
-using tier4_planning_msgs::msg::PathPointWithLaneId;
-using tier4_planning_msgs::msg::PathWithLaneId;
 using Trajectory = autoware::trajectory::Trajectory<PathPointWithLaneId>;
 
 class PathGenerator : public rclcpp::Node