diff --git a/src/entities/user/types.ts b/src/entities/user/types.ts
index 99b1513..67f7555 100644
--- a/src/entities/user/types.ts
+++ b/src/entities/user/types.ts
@@ -52,7 +52,7 @@ export const UserSchema = z.object({
   signDate: z.string().nullable().optional(),
   password: z.string(),
   externalId: z.string(),
-  klaviyoId: z.string(),
+  klaviyoId: z.string().nullable(),
   assistants: z.array(z.string()),
   createdAt: z.string().optional(),
   updatedAt: z.string(),