diff --git a/CODEGEN_VERSION b/CODEGEN_VERSION
index 983636f7b..006d83779 100644
--- a/CODEGEN_VERSION
+++ b/CODEGEN_VERSION
@@ -1 +1 @@
-6012b623b1c09ad54d466947da04511a042ee45a
\ No newline at end of file
+2ceb45f50a72455c534a54d634b015602dc55f2d
\ No newline at end of file
diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index 83c68c9d1..115c3a680 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v2324
\ No newline at end of file
+v2345
\ No newline at end of file
diff --git a/stripe/v2/core/_event.py b/stripe/v2/core/_event.py
index b46425608..3b275571d 100644
--- a/stripe/v2/core/_event.py
+++ b/stripe/v2/core/_event.py
@@ -3,7 +3,7 @@
 # -*- coding: utf-8 -*-
 
 import json
-from typing import Any, ClassVar, Dict, Optional, cast
+from typing import Any, ClassVar, Dict, Optional, cast, Union
 
 from typing_extensions import Literal, TYPE_CHECKING