diff --git a/README.md b/README.md
index 2d4a1ecd..e096a230 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ VizTracer also supports json output that complies with Chrome trace event format
 
 ## Requirements
 
-VizTracer requires python 3.6+. No other package is needed. For now, VizTracer binary on pip only supports CPython + Linux. However, in theory the source code can build on Windows/MacOS.
+VizTracer requires python 3.6+. No other package is needed. For now, VizTracer only supports CPython + Linux/MacOS. 
 
 ## Install
 
diff --git a/setup.py b/setup.py
index 43edea83..f5ad36d3 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setuptools.setup(
     name="viztracer",
-    version="0.1.2",
+    version="0.1.3",
     author="Tian Gao",
     author_email="gaogaotiantian@hotmail.com",
     description="A debugging and profiling tool that can trace and visualize python code execution",
@@ -31,9 +31,13 @@
         )
     ],
     classifiers=[
-        "Programming Language :: Python :: 3",
+        "Development Status :: 4 - Beta",
+        "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "License :: OSI Approved :: Apache Software License",
-        "Operating System :: OS Independent",
+        "Operating System :: MacOS",
+        "Operating System :: POSIX :: Linux",
         "Topic :: Software Development :: Quality Assurance",
     ],
     python_requires=">=3.6",