diff --git a/setup.py b/setup.py
index 39f792b1..c76139fd 100644
--- a/setup.py
+++ b/setup.py
@@ -172,14 +172,14 @@ def setup():
         install_requires=parse_requirements("requirements.txt"),
         packages=setuptools.find_packages(),
         url="https://github.com/cornell-zhang/heterocl",
-        python_requires=">=3.6",
+        python_requires=">=3.7",
         classifiers=[
-            "Programming Language :: Python :: 3.6",
             "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
-            "Topic :: Scientific/Engineering :: Accelerator Design",
+            "Topic :: Scientific/Engineering",
+            "Topic :: System :: Hardware",
             "Operating System :: OS Independent",
         ],
         zip_safe=True,