diff --git a/optionsfactory/__init__.py b/optionsfactory/__init__.py
index d2e6ab8..b17ec9d 100644
--- a/optionsfactory/__init__.py
+++ b/optionsfactory/__init__.py
@@ -1,4 +1,4 @@
-from .optionsfactory import OptionsFactory
+from .optionsfactory import OptionsFactory, MutableOptionsFactory
 from .withmeta import WithMeta
 from ._version import get_versions
 
@@ -6,6 +6,7 @@
 
 __all__ = [
     "OptionsFactory",
+    "MutableOptionsFactory",
     "WithMeta",
     "__version__",
 ]