diff --git a/tools/azure-sdk-tools/packaging_tools/generate_utils.py b/tools/azure-sdk-tools/packaging_tools/generate_utils.py
index 049d45906c8a..987fed04a3dc 100644
--- a/tools/azure-sdk-tools/packaging_tools/generate_utils.py
+++ b/tools/azure-sdk-tools/packaging_tools/generate_utils.py
@@ -6,7 +6,7 @@
 
 from azure_devtools.ci_tools.git_tools import get_add_diff_file_list
 from pathlib import Path
-from subprocess import check_call, getoutput
+from subprocess import check_call
 from typing import List, Dict, Any
 from glob import glob
 import yaml
@@ -329,9 +329,21 @@ def format_samples(sdk_code_path) -> None:
 
     _LOGGER.info(f"format generated_samples successfully")
 
+def get_npm_package_version(package: str) -> Dict[any, any]:
+    temp_file = "python_temp.json"
+    check_call(f"npm list {package} -json > {temp_file}", shell=True)
+    with open(temp_file, "r") as file_in:
+        data = json.load(file_in)
+    if "dependencies" not in data:
+        _LOGGER.info(f"can not find {package}: {data}")
+        return {}
+    
+    return data["dependencies"]
+
 def gen_cadl(cadl_relative_path: str, spec_folder: str) -> Dict[str, Any]:
     # update config file
     cadl_python = "@azure-tools/cadl-python"
+    autorest_python = "@autorest/python"
     project_yaml_path = Path(spec_folder) / cadl_relative_path / "cadl-project.yaml"
     with open(project_yaml_path, "r") as file_in:
         project_yaml = yaml.safe_load(file_in)
@@ -358,10 +370,10 @@ def gen_cadl(cadl_relative_path: str, spec_folder: str) -> Dict[str, Any]:
     if Path(output_path / "output.yaml").exists():
         os.remove(Path(output_path / "output.yaml"))
 
-    # get version of @azure-tools/cadl-python used in generation
-    cadl_python_version = getoutput(f"npm view {cadl_python} version").split('\n')[-1]
+    # get version of codegen used in generation
+    npm_package_verstion = get_npm_package_version(autorest_python)
 
     # return to original folder
     os.chdir(origin_path)
 
-    return {cadl_python: cadl_python_version}
\ No newline at end of file
+    return npm_package_verstion
\ No newline at end of file