diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8b6923d56..e34185d30 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -8,5 +8,5 @@ sphinx-copybutton==0.5.2
 sphinxcontrib-mermaid==0.9.2
 
 # auxiliary
-typing-extensions==4.8.0
+typing-extensions==4.9.0
 mypy-extensions==1.0.0