diff --git a/pyproject.toml b/pyproject.toml
index b91dc4d3..68be708e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,7 @@ doc = [
     "ansys-sphinx-theme[autoapi]==1.2.3",
     "enum-tools==0.12.0",
     "jupyter_sphinx==0.5.3",
-    "matplotlib==3.9.3",
+    "matplotlib==3.9.4",
     "numpydoc==1.8.0",
     "phantomjs==1.4.1",
     "pypandoc==1.14",