diff --git a/.github/workflows/run_test.yaml b/.github/workflows/run_test.yaml
index 48681e91..e9229ea4 100644
--- a/.github/workflows/run_test.yaml
+++ b/.github/workflows/run_test.yaml
@@ -25,10 +25,8 @@ jobs:
       - name: Install nebulagraph-python from source and test dependencies
         run: |
           python -m pip install --upgrade pip
-          # remove pyproject.toml to avoid pdm install
-          rm pyproject.toml
+          pip install pytest pytest-cov
           pip install .
-          pip install pip-tools pytest
       - name: Test with pytest
         run: |
           docker-compose -f docker-compose.yaml up -d
@@ -42,7 +40,7 @@ jobs:
     strategy:
       max-parallel: 2
       matrix:
-        python-version: [3.7, 3.8, 3.9, '3.10', 3.11]
+        python-version: [3.8, 3.9, '3.10', 3.11, 3.12]
 
     steps:
       - name: Maximize runner space
@@ -62,10 +60,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install .
-          pdm install -G:dev
-          pdm install -G:test
+          pdm sync
       - name: lint
         run: pdm fmt-check
       - name: Test with pytest
diff --git a/README.md b/README.md
index 611520f2..cb576785 100644
--- a/README.md
+++ b/README.md
@@ -60,18 +60,10 @@ cd nebula-python
 
 - Install from source
 
-> For python version >= 3.7.0
-
 ```bash
 pip install .
 ```
 
-> For python version >= 3.6.2, < 3.7.0
-
-```bash
-python3 setup.py install
-```
-
 </details>
 
 ## Quick Example: Connecting to GraphD Using Graph Client
diff --git a/pyproject.toml b/pyproject.toml
index f876d484..fbe6cdd3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "nebula3-python"
 version = "3.8.0"
-description = "Python client for NebulaGraph V3.4"
+description = "Python client for NebulaGraph v3"
 authors = [
     {name = "vesoft-inc", email = "info@vesoft.com"},
 ]
@@ -20,8 +20,11 @@ license = {text = "Apache 2.0"}
 Homepage = "https://github.com/vesoft-inc/nebula-python"
 
 [build-system]
-requires = ["pdm-backend"]
-build-backend = "pdm.backend"
+requires = ["flit-core<3.9,>=3.4"]
+build-backend = "flit_core.buildapi"
+
+[tool.flit.module]
+name = "nebula3"
 
 [tool.black]
 extend-exclude = '''
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 00c42f66..00000000
--- a/setup.py
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright (c) 2020 vesoft inc. All rights reserved.
-#
-# This source code is licensed under Apache 2.0 License.
-
-import sys
-from setuptools import setup, find_packages
-from pathlib import Path
-
-base_dir = Path(__file__).parent
-long_description = (base_dir / "README.md").read_text()
-
-requirements = [
-    "httplib2 >= 0.20.0",
-    "future >= 0.18.0",
-    "six >= 1.16.0",
-    "pytz >= 2021.1",
-    "httpx[http2] >= 0.22.0",
-]
-
-if sys.version_info < (3, 7):
-    # httpcore-->anyio-->contextvars when it's < 3.7
-    # while setuptools doesn't handle the dependency well
-    requirements.append("contextvars==2.4")
-
-setup(
-    name="nebula3-python",
-    version="3.8.0",
-    license="Apache 2.0",
-    author="vesoft-inc",
-    author_email="info@vesoft.com",
-    description="Python client for NebulaGraph V3.4",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    url="https://github.com/vesoft-inc/nebula-python",
-    install_requires=requirements,
-    packages=find_packages(),
-    platforms=["3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12"],
-    package_dir={"nebula3": "nebula3"},
-)