diff --git a/setup.cfg b/setup.cfg
index 7c8a755..b948fea 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -21,6 +21,8 @@ classifiers =
     Programming Language :: Python
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
+    Topic :: Documentation
+    Topic :: Utilities
 python_requires = >=3.7
 keywords = sphinx
 
diff --git a/setup.py b/setup.py
index 26f5ba6..33db8be 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from setuptools import setup