diff --git a/setup.py b/setup.py
index 6ab16705..76a45df6 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@ extras_require = {
     ],
     "docs": [
         "sphinx>=6.0.0",
-        "sphinx-autobuild>=2024.2.4",
+        "sphinx-autobuild>=2021.3.14",
         "sphinx_rtd_theme>=1.0.0",
         "towncrier>=21,<22",
     ],