diff --git a/src/autodoc2/config.py b/src/autodoc2/config.py
index b232d57..cc93849 100644
--- a/src/autodoc2/config.py
+++ b/src/autodoc2/config.py
@@ -488,6 +488,14 @@ class Config:
         },
     )
 
+    db_fixup: t.Callable = dc.field(
+        default=None,
+        metadata={
+            "help": "Callback to fixup database, e.g. manually set 'all' if __all__ is dynamic",
+            "category": "render",
+        },
+    )
+
     # TODO regexes
     # module_summary: bool | None = None
     # class_inheritance: bool | None = None
diff --git a/src/autodoc2/sphinx/extension.py b/src/autodoc2/sphinx/extension.py
index 50ad969..f6add9f 100644
--- a/src/autodoc2/sphinx/extension.py
+++ b/src/autodoc2/sphinx/extension.py
@@ -197,6 +197,10 @@ def run_autodoc_package(app: Sphinx, config: Config, pkg_index: int) -> str | No
     def _warn_render(msg: str, type_: WarningSubtypes) -> None:
         warn_sphinx(msg, type_)
 
+    # invoke user-provided fixups
+    if config.db_fixup:
+        config.db_fixup(autodoc2_db)
+
     # write the files
     output.mkdir(parents=True, exist_ok=True)
     paths = []