diff --git a/.stats.yml b/.stats.yml
index 8fdd048cabc..fb9c1f9d86d 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 1417
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/cloudflare%2Fcloudflare-2813c0c96b70c03904f256698f9ff16112adc0f1eabb2c8e988bca4f87d6610e.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/cloudflare%2Fcloudflare-b414602f316e30c6870beeb57670a6c2360a68b7b0b5e349d748700b7516ba29.yml
diff --git a/src/cloudflare/types/workflows/instance_list_response.py b/src/cloudflare/types/workflows/instance_list_response.py
index 775aba09486..67c896f4736 100644
--- a/src/cloudflare/types/workflows/instance_list_response.py
+++ b/src/cloudflare/types/workflows/instance_list_response.py
@@ -1,5 +1,6 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
+from typing import Optional
 from datetime import datetime
 from typing_extensions import Literal
 
@@ -13,8 +14,12 @@ class InstanceListResponse(BaseModel):
 
     created_on: datetime
 
+    ended_on: Optional[datetime] = None
+
     modified_on: datetime
 
+    started_on: Optional[datetime] = None
+
     status: Literal[
         "queued", "running", "paused", "errored", "terminated", "complete", "waitingForPause", "waiting", "unknown"
     ]