diff --git a/src/app/core/models/index.ts b/src/app/core/models/index.ts
index 298b62be..ab39749a 100644
--- a/src/app/core/models/index.ts
+++ b/src/app/core/models/index.ts
@@ -15,6 +15,7 @@ export const models: any[] = [
   Tour,
   OrganismPlaceholders,
   GenePlaceholders,
+  RegionPlaceholders,
   GET,
   POST,
   Request,