diff --git a/sphinx_immaterial/__init__.py b/sphinx_immaterial/__init__.py
index 94a113bdb..2ac3786b5 100644
--- a/sphinx_immaterial/__init__.py
+++ b/sphinx_immaterial/__init__.py
@@ -324,9 +324,14 @@ def _config_inited(
             + "The sphinx.ext.napoleon extension may be used instead for NumPy-style docstring support."
         )
 
+    # Enable the legacy (``Documenter``) autodoc implementation
+    # for all users of the theme
+    config.autodoc_use_legacy_class_based = True
+
 
 def setup(app: Sphinx):
-    app.connect("config-inited", _config_inited)
+    # Run before sphinx.ext.autodoc._register_directives()
+    app.connect("config-inited", _config_inited, priority=50)
 
     app.setup_extension("sphinx_immaterial.css_and_javascript_bundles")
     app.setup_extension("sphinx_immaterial.external_resource_cache")
diff --git a/sphinx_immaterial/apidoc/python/type_param_utils.py b/sphinx_immaterial/apidoc/python/type_param_utils.py
index aafbfdfb8..7e0a73541 100644
--- a/sphinx_immaterial/apidoc/python/type_param_utils.py
+++ b/sphinx_immaterial/apidoc/python/type_param_utils.py
@@ -232,6 +232,10 @@ def stringify_annotation(
     for module in [
         "sphinx.util.typing",
         "sphinx.ext.autodoc",
+        "sphinx.ext.autodoc._dynamic._loader",
+        "sphinx.ext.autodoc._dynamic._type_annotations",
+        "sphinx.ext.autodoc._legacy_class_based._documenters",
+        "sphinx.ext.autodoc._generate",
         "sphinx.ext.autodoc.typehints",
         "sphinx.util.inspect",
         "sphinx.ext.napoleon.docstring",