diff --git a/docs/requirements.txt b/docs/requirements.txt
index 0c0c183fc..4bc87d53a 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,2 @@
-sphinx==3.3.1
+sphinx==3.5.2
 sphinx-autobuild==2020.9.1