diff --git a/timm/optim/__init__.py b/timm/optim/__init__.py
index 0775638e..d2eb67ba 100644
--- a/timm/optim/__init__.py
+++ b/timm/optim/__init__.py
@@ -13,4 +13,5 @@ from .nvnovograd import NvNovoGrad
 from .radam import RAdam
 from .rmsprop_tf import RMSpropTF
 from .sgdp import SGDP
+from .lion import Lion
 from .optim_factory import create_optimizer, create_optimizer_v2, optimizer_kwargs