diff --git a/Install_Documentation/README.md b/Install_Documentation/README.md
index 4213ae47099d00d122a23c6b12abafcb2c33a862..39c739738b219956b6e8e2ec929d862588e25de7 100644
--- a/Install_Documentation/README.md
+++ b/Install_Documentation/README.md
@@ -20,7 +20,10 @@ Ensure you have the following installed on your system:
 
 2. **Install Dependencies**:
     ```bash
-    pip install -r /Install_Documentation/requirements.txt
+    cd ~/robot-sensor/Install_Documentation/
+    ```
+    ```bash
+    pip install -r /requirements.txt
     ```
 
 3. **Build the Workspace**:
diff --git a/Install_Documentation/requirements.txt b/Install_Documentation/requirements.txt
index 970dd2b77a2ada1c82663d20a6b341171716a421..01666990647f6ed757e88c41afd57954e1e573ba 100644
--- a/Install_Documentation/requirements.txt
+++ b/Install_Documentation/requirements.txt
@@ -4,7 +4,7 @@ numpy>=1.21.5
 pyserial>=3.5
 trimesh>=4.6.8
 scipy>=1.8.0
-sensor_msgs_py>=4.8.0
+sensor_msgs_py>=4.2.3
 std_msgs>=4.8.0
 tf2_ros>=0.25.12
 rtree>=1.4.0
\ No newline at end of file