diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4e9b7f8..cf271ed 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-sphinx==4.3.0
+sphinx==4.3.1
 sphinx-rtd-theme==0.5.2
 -e .