diff --git a/src/repositories/ApiBasedRepository.ts b/src/repositories/ApiBasedRepository.ts
index 5e751ed..09c0d60 100644
--- a/src/repositories/ApiBasedRepository.ts
+++ b/src/repositories/ApiBasedRepository.ts
@@ -1,11 +1,11 @@
 import { GetterRepository } from "./GetterRepository";
-import { IEta, IOrderedStop, IRoute } from "../entities/entities";
+import { IEta, IOrderedStop, IRoute, IStop } from "../entities/entities";
 
 export interface ApiBasedRepositoryCache {
-  etasForShuttleId: {
+  etasForShuttleId?: {
     [shuttleId: string]: IEta[],
   },
-  etasForStopId: {
+  etasForStopId?: {
     [stopId: string]: IEta[],
   },
   // To speed things up, implement caches for other data later