diff --git a/docs/requirements.txt b/docs/requirements.txt
index f47f3eb..f680977 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-sphinx==4.0.2
+sphinx==6.0.0
 sphinx-click==3.0.1
 sphinx-rtd-theme==0.5.2