diff --git a/docs/requirements.txt b/docs/requirements.txt
index d1abb074d..22eaa7cf6 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx
+sphinx >=3
 sphinxcontrib-napoleon
 sphinx-argparse
 sphinx_rtd_theme