diff --git a/doc/requirements.txt b/doc/requirements.txt
index 485b36e..54a5185 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -13,4 +13,4 @@ sphinxcontrib-mermaid ~= 2.0
 autoapi ~= 2.0.1
 sphinx_design ~= 0.7.0
 sphinx-copybutton ~= 0.5.0
-sphinx_autodoc_typehints ~= 3.6
+sphinx_autodoc_typehints ~= 3.9