diff --git a/ibm_vpc/vpc_v1.py b/ibm_vpc/vpc_v1.py
index eb67052..e2c7dc6 100644
--- a/ibm_vpc/vpc_v1.py
+++ b/ibm_vpc/vpc_v1.py
@@ -107,7 +107,7 @@ def get_service_url_for_region(
 
     def __init__(
         self,
-        version: str,
+        version: Optional[str] = "2025-03-04",
         authenticator: Authenticator = None,
         generation: Optional[int] = 2,
     ) -> None: