diff --git a/setup.py b/setup.py
index edb93f65647e367cb044195b1e81e1957883cdf7..f1ed391abbfb4a97e3d1af18420823b4fa655092 100755
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@ setuptools.setup(
                  "Intended Audience :: Science/Research",
                  "License :: OSI Approved :: MIT License",
                  "Operating System :: OS Independent",
-                 "Programming Language :: Python :: 3.7",
+                 "Programming Language :: Python :: 3.8",
                  "Topic :: Scientific/Engineering :: Physics",
                  "Topic :: Scientific/Engineering :: Astronomy"],
     package_dir={'csst': 'csst'},