diff --git a/pyproject.toml b/pyproject.toml
index b1bac8df7..dd69dd7f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ dependencies = ["ansys-dpf-core>=0.7.2",
 
 [project.optional-dependencies]
 tests = [
-    "matplotlib==3.9.2",
+    "matplotlib==3.9.3",
     "hollerith==0.5.2",
     "numpy==2.1.3",
     "pytest==8.3.3",
@@ -55,7 +55,7 @@ codegen = [
 ]
 doc = [
     "recommonmark==0.7.1",
-    "matplotlib==3.9.2",
+    "matplotlib==3.9.3",
     "imageio==2.36.0",
     "imageio-ffmpeg==0.5.1",
     "numpydoc==1.8.0",