diff --git a/src/iam/schemas.py b/src/iam/schemas.py
index bd2f586..fa6adfc 100644
--- a/src/iam/schemas.py
+++ b/src/iam/schemas.py
@@ -6,7 +6,7 @@ Models follow the nomenclature of:
 - Mixins: "<Attribute>Mixin"
 - Models: "<Module><Method><Resource><Opt:Resource><Direction>" ie "IAMGetGroupPermissionsResponse"
 """
-from typing import Optional
+from typing import Optional, Annotated
 
 from pydantic import EmailStr, ConfigDict, Field
 
@@ -95,7 +95,7 @@ class IAMDeletePermissionRequest(PermIDMixin):
 	pass
 
 class IAMGetPermissionsSearchRequest(OrgIDMixin):
-	service_id: Optional[int] = Field(gt=0)
+	service_id: Annotated[int | None, Field(gt=0)] = None
 	resource: Optional[str] = None
 	action: Optional[str] = None