diff --git a/pyproject.toml b/pyproject.toml
index 21016a02..9ed70b87 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ doc = [
     "numpydoc>=1.5.0,<1.9",
     "Sphinx>=7.1.0,<8.1",
     "sphinx-copybutton>=0.5.0,<0.6",
-    "sphinx-autobuild==2021.3.14; python_version == '3.8'",
+    "sphinx-autobuild==2024.10.3; python_version == '3.8'",
     "sphinx-autobuild==2024.10.3; python_version > '3.8'",
     "nbsphinx>=0.9.0,<0.10",
     "sphinx_design",