diff --git a/certbot-nginx/certbot_nginx/_internal/nginxparser.py b/certbot-nginx/certbot_nginx/_internal/nginxparser.py
index 6f2e73443..79bb5b8db 100644
--- a/certbot-nginx/certbot_nginx/_internal/nginxparser.py
+++ b/certbot-nginx/certbot_nginx/_internal/nginxparser.py
@@ -294,7 +294,7 @@ def dumps(blocks: UnspacedList) -> str:
     """Dump to a Unicode string.
 
     :param UnspacedList blocks: The parsed tree
-    :rtype: six.text_type
+    :rtype: str
 
     """
     return str(RawNginxDumper(blocks.spaced))
diff --git a/certbot/setup.py b/certbot/setup.py
index c04cb10e3..23855854b 100644
--- a/certbot/setup.py
+++ b/certbot/setup.py
@@ -85,7 +85,6 @@ test_extras = [
     'types-pywin32',
     'types-requests',
     'types-setuptools',
-    'types-six',
     'wheel',
 ]