diff --git a/src/workos/types/events/authentication_payload.py b/src/workos/types/events/authentication_payload.py
index 09e851f0..e013a1f5 100644
--- a/src/workos/types/events/authentication_payload.py
+++ b/src/workos/types/events/authentication_payload.py
@@ -61,10 +61,18 @@ class AuthenticationPasswordSucceededPayload(AuthenticationResultSucceeded):
     user_id: str
 
 
+class AuthenticationSsoData(WorkOSModel):
+    connection_id: Optional[str] = None
+    organization_id: Optional[str] = None
+    session_id: Optional[str] = None
+
+
 class AuthenticationSsoFailedPayload(AuthenticationResultFailed):
     type: Literal["sso"]
+    sso: Optional[AuthenticationSsoData] = None
 
 
 class AuthenticationSsoSucceededPayload(AuthenticationResultSucceeded):
     type: Literal["sso"]
     user_id: Optional[str] = None
+    sso: Optional[AuthenticationSsoData] = None