diff --git a/pyproject.toml b/pyproject.toml
index b91ca907..de46804a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ tests = [
 ]
 doc = [
     "ansys-sphinx-theme[autoapi]==1.5.2",
-    "numpydoc==1.8.0",
+    "numpydoc==1.9.0",
     "sphinx==8.2.3",
     "sphinx-autodoc-typehints==3.1.0",
     "sphinx-copybutton==0.5.2",