diff --git a/pyproject.toml b/pyproject.toml
index 9b40fb60c..e5741ea58 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ doc = [
     "recommonmark==0.7.1",
     "matplotlib==3.8.0",
     "imageio==2.31.4",
-    "imageio-ffmpeg==0.4.8",
+    "imageio-ffmpeg==0.4.9",
     "pyvista==0.42.1",
     "numpydoc==1.5.0",
     "Sphinx==7.2.6",