diff --git a/app/schemas/user.py b/app/schemas/user.py
index 8749ee0..55faed6 100644
--- a/app/schemas/user.py
+++ b/app/schemas/user.py
@@ -10,12 +10,14 @@ class UserCreate(BaseModel):
     name: str = Field(..., min_length=1, max_length=200)
     password: str = Field(..., min_length=8)
     role: str = Field(default="viewer")
+    role_id: str | None = Field(default=None, description="UUID of a custom Role")
     is_active: bool = True
 
 
 class UserUpdate(BaseModel):
     name: str | None = Field(None, min_length=1, max_length=200)
     role: str | None = None
+    role_id: str | None = Field(default=None, description="UUID of a custom Role; send null to clear")
     is_active: bool | None = None
 
 
@@ -24,6 +26,7 @@ class UserResponse(BaseModel):
     email: str
     name: str
     role: str
+    role_id: str | None = None
     is_active: bool
     tenant_id: str