From 8b086659318828f1383fe953db56eb058ce9ab81 Mon Sep 17 00:00:00 2001
From: Aaron Pham <29749331+aarnphm@users.noreply.github.com>
Date: Tue, 8 Nov 2022 03:14:56 -0800
Subject: [PATCH] fix: types

Signed-off-by: Aaron Pham <29749331+aarnphm@users.noreply.github.com>
---
 src/bentoml/_internal/service/openapi/specification.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bentoml/_internal/service/openapi/specification.py b/src/bentoml/_internal/service/openapi/specification.py
index 843d298e221..f3e86b274bf 100644
--- a/src/bentoml/_internal/service/openapi/specification.py
+++ b/src/bentoml/_internal/service/openapi/specification.py
@@ -104,7 +104,7 @@ class Schema:
     anyOf: t.Optional[t.List[Schema]] = None
     not_: t.Optional[Schema] = None
     items: t.Optional[t.Union[Schema, t.List[Schema]]] = None
-    properties: t.Optional[t.Dict[str, Schema | Reference]] = None
+    properties: t.Optional[t.Dict[str, t.Union[Schema, Reference]]] = None
     additionalProperties: t.Optional[t.Union[Schema, Reference, bool]] = None
     description: t.Optional[str] = None
     format: t.Optional[str] = None