diff --git a/setup.py b/setup.py
index b3aaa361396..9f305eafde3 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@ def get_version(rel_path):
         "Topic :: Software Development :: Build Tools",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3 :: Only"
+        "Programming Language :: Python :: 3 :: Only",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",