diff --git a/setup.py b/setup.py
index a3308b8..ad358f5 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
 setup(name="spec_plots",
       version=__version__,
       description="Create preview plots of HST or JWST spectra.",
-      classifiers=["Programming Language :: Python :: 3.9"],
+      classifiers=["Programming Language :: Python :: 3"],
       url="https://github.com/spacetelescope/spec_plots",
       author="Scott W. Fleming",
       author_email="fleming@stsci.edu",