diff --git a/pyproject.toml b/pyproject.toml
index 24b1e7982f..70caa460f1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -82,7 +82,7 @@ doc = [
     "jupyter_sphinx==0.4.0",
     "jupyterlab>=3.2.8",
     "matplotlib==3.8.0",
-    "numpydoc==1.5.0",
+    "numpydoc==1.6.0",
     "pandas==2.1.1",
     "plotly==5.17.0",
     "pyiges[full]==0.3.1",