diff --git a/docs/source/conf.py b/docs/source/conf.py
index fc85728f8..c6dcc4f65 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -40,7 +40,7 @@ def setup(app):
 
 # If your documentation needs a minimal Sphinx version, state it here.
 #
-needs_sphinx = '1.5.3'
+needs_sphinx = '4.2.0'
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom