diff --git a/.github/workflows/ros-ci.yml b/.github/workflows/ros-ci.yml
index c5079aa..e957c18 100644
--- a/.github/workflows/ros-ci.yml
+++ b/.github/workflows/ros-ci.yml
@@ -53,7 +53,7 @@ jobs:
         uses: ros-tooling/action-ros-ci@v0.3
         with:
           target-ros2-distro: ${{ matrix.ros_distribution }}
-          vcs-repo-file-url: "https://raw.githubusercontent.com/ROBOTIS-GIT/turtlebot3/main/turtlebot3_ci.repos"
+          vcs-repo-file-url: "https://raw.githubusercontent.com/ROBOTIS-GIT/turtlebot3_simulations/main/turtlebot3_simulations_ci.repos"
           package-name: |
             turtlebot3_fake_node
             turtlebot3_gazebo
diff --git a/turtlebot3_simulations_ci.repos b/turtlebot3_simulations_ci.repos
index bf70345..1fa5558 100644
--- a/turtlebot3_simulations_ci.repos
+++ b/turtlebot3_simulations_ci.repos
@@ -10,7 +10,7 @@ repositories:
   utils/DynamixelSDK:
     type: git
     url: https://github.com/ROBOTIS-GIT/DynamixelSDK.git
-    version: main
+    version: humble
   utils/hls_lfcd_lds_driver:
     type: git
     url: https://github.com/ROBOTIS-GIT/hls_lfcd_lds_driver.git