diff --git a/packages/repository/src/model.ts b/packages/repository/src/model.ts
index 10b0f7180a0f..823346c6d555 100644
--- a/packages/repository/src/model.ts
+++ b/packages/repository/src/model.ts
@@ -28,7 +28,7 @@ export type PropertyType =
  */
 export interface PropertyDefinition {
   type: PropertyType; // For example, 'string', String, or {}
-  id?: boolean;
+  id?: boolean | number;
   json?: PropertyForm;
   store?: PropertyForm;
   itemType?: PropertyType; // type of array