diff --git a/docs-requirements.txt b/docs-requirements.txt
index 4efc0ca46..a681a9b84 100644
--- a/docs-requirements.txt
+++ b/docs-requirements.txt
@@ -1,4 +1,4 @@
-sphinx
+sphinx==4.5.0
 sphinx-rtd-theme~=0.4
 sphinx-autodoc-typehints