diff --git a/setup.py b/setup.py
index 211b2a8..577712f 100644
--- a/setup.py
+++ b/setup.py
@@ -35,6 +35,7 @@ def open_local(paths, mode="r", encoding="utf8"):
     packages=setuptools.find_packages(),
     entry_points={"console_scripts": ["pprintjson=pprintjson.pprintjson:cli"]},
     classifiers=(
+        "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "License :: OSI Approved :: MIT License",