diff --git a/doc/requirements.txt b/doc/requirements.txt
index 62541ef4e1..640a85ca08 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
-sphinx==3.4.3
+sphinx==5.1.1
 sphinx-rtd-theme==0.5.0
 docutils==0.15.2
 packaging==20.9