diff --git a/pyproject.toml b/pyproject.toml
index be547701a..4374779d1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ tests = [
 docs = [
     "autoapi",
     "sphinx",
-    "sphinx-argparse",
+    "sphinx-argparse<0.5.0",
     "sphinx-autodoc-typehints",
     "sphinx-copybutton",
     "sphinx-togglebutton",