diff --git a/docs/requirements.txt b/docs/requirements.txt
index f0c41ef..a483f71 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-Sphinx==3.5.3
+Sphinx==4.3.2
 sphinx-autoapi==1.7.0
 sphinx-material==0.0.32