diff --git a/setup.py b/setup.py
index 2d6b5c25e..b51cd6186 100644
--- a/setup.py
+++ b/setup.py
@@ -46,8 +46,7 @@ def get_long_description():
     "starlette>=0.26.0",
     "uvicorn",
     "pydantic>=1.10.10,<2.0.0",
-    # https://github.com/zmievsa/pydantic-duality/issues/21
-    "pydantic-duality<=1.2.2",
+    "pydantic-duality>=1.2.4",
     "sqlalchemy[asyncio]>=2.0.0",
     "sqlalchemy_utils>=0.40.0",
     "alembic>=1.10.2",