diff --git a/.gitignore b/.gitignore
index c519b0d..f939994 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,4 @@
 *.swp
 build
 dist
-lunardate.egg-info/PKG-INFO
+lunardate.egg-info
diff --git a/lunardate.egg-info/SOURCES.txt b/lunardate.egg-info/SOURCES.txt
deleted file mode 100644
index b37ab12..0000000
--- a/lunardate.egg-info/SOURCES.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-LICENSE.txt
-README.md
-lunardate.py
-setup.py
-lunardate.egg-info/PKG-INFO
-lunardate.egg-info/SOURCES.txt
-lunardate.egg-info/dependency_links.txt
-lunardate.egg-info/top_level.txt
\ No newline at end of file
diff --git a/lunardate.egg-info/dependency_links.txt b/lunardate.egg-info/dependency_links.txt
deleted file mode 100644
index 8b13789..0000000
--- a/lunardate.egg-info/dependency_links.txt
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/lunardate.egg-info/top_level.txt b/lunardate.egg-info/top_level.txt
deleted file mode 100644
index 4f91082..0000000
--- a/lunardate.egg-info/top_level.txt
+++ /dev/null
@@ -1 +0,0 @@
-lunardate
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..07e10f1
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools >= 77.0.3"]
+build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
index d7f4ee8..31858de 100755
--- a/setup.py
+++ b/setup.py
@@ -1,14 +1,26 @@
 #!/usr/bin/env python
 
 from setuptools import setup, find_packages
+import os
+import re
 
-import lunardate
+def get_version():
+    with open(
+        os.path.join(os.path.dirname(__file__), "lunardate.py"),
+        "r",
+        encoding="utf-8",
+    ) as f:
+        version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]", f.read(), re.M)
+        if version_match:
+            return version_match.group(1)
+    raise RuntimeError("Unable to find version string.")
 
 setup(name='lunardate',
-      version=lunardate.__version__,
+      version=get_version(),
       py_modules = ['lunardate'],
       description = 'A Chinese Calendar Library in Pure Python',
-      long_description = lunardate.__doc__,
+      long_description = open("README.md", "r", encoding="utf-8").read(),
+      long_description_content_type="text/markdown",
       author = 'LI Daobing',
       author_email = 'lidaobing@gmail.com',
       url = 'https://github.com/lidaobing/python-lunardate',