diff --git a/silero_vad_ros/CMakeLists.txt b/silero_vad_ros/CMakeLists.txt
index 79549a027..dd5e32d17 100644
--- a/silero_vad_ros/CMakeLists.txt
+++ b/silero_vad_ros/CMakeLists.txt
@@ -5,6 +5,7 @@ find_package(catkin REQUIRED COMPONENTS catkin_virtualenv)
 
 catkin_generate_virtualenv(
     PYTHON_INTERPRETER python3.8
+    USE_SYSTEM_PACKAGES FALSE
     CHECK_VENV FALSE
 )
 
diff --git a/silero_vad_ros/requirements.txt b/silero_vad_ros/requirements.txt
index 3daffcdd3..aaf7fc1be 100644
--- a/silero_vad_ros/requirements.txt
+++ b/silero_vad_ros/requirements.txt
@@ -1 +1,3 @@
+torch
 torchaudio
+numpy