diff --git a/docs/conf.py b/docs/conf.py
index a0a3315c6..d95ec2a4a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -22,7 +22,7 @@ import sphinx_rtd_theme
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
-# needs_sphinx = '1.0'
+needs_sphinx = "2.4"
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
diff --git a/requirements.txt b/requirements.txt
index 14f934c9c..0e0d38cdd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,4 +9,5 @@ pyflakes
 pyroma
 pytest
 pytest-cov
+sphinx>=2.4
 sphinx-rtd-theme