diff --git a/setup.py b/setup.py
index bd75e5ae9..fdb5d7c6f 100644
--- a/setup.py
+++ b/setup.py
@@ -124,7 +124,6 @@
             "License :: OSI Approved :: Apache Software License",
             "Natural Language :: English",
             "Operating System :: OS Independent",
-            "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
             "Topic :: Scientific/Engineering :: Medical Science Apps.",