diff --git a/docs/_ext/custom_styles/option_parser.py b/docs/_ext/custom_styles/option_parser.py
index da9b1e4c70..63b752fd6c 100644
--- a/docs/_ext/custom_styles/option_parser.py
+++ b/docs/_ext/custom_styles/option_parser.py
@@ -21,7 +21,8 @@
 from typing import Type, Optional
 
 import numpy as np
-from sphinx.ext.autodoc import Sphinx, Options as SphinxOptions
+from sphinx.application import Sphinx
+from sphinx.ext.autodoc import Options as SphinxOptions
 from sphinx.ext.napoleon import Config as NapoleonConfig
 from sphinx.ext.napoleon import GoogleDocstring