diff --git a/pyproject.toml b/pyproject.toml
index 549d1c3..4c7bceb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ tests = [
 ]
 doc = [
     "ansys_sphinx_theme[autoapi]==1.5.3",
-    "numpydoc==1.8.0",
+    "numpydoc==1.9.0",
     "Sphinx==8.2.3",
     "Sphinx-copybutton==0.5.2",
 ]