diff --git a/certbot/certbot/__main__.py b/certbot/certbot/__main__.py
index 58d9061df..987bd71a1 100644
--- a/certbot/certbot/__main__.py
+++ b/certbot/certbot/__main__.py
@@ -1,3 +1,4 @@
+"""Certbot entrypoint for package execution"""
 from certbot.main import main
 
 if __name__ == "__main__":