diff --git a/src/lib/services/generic.service.ts b/src/lib/services/generic.service.ts
index ed46356..660f5b5 100644
--- a/src/lib/services/generic.service.ts
+++ b/src/lib/services/generic.service.ts
@@ -23,7 +23,7 @@ export interface QueryParam {
  */
 export abstract class GenericService<I> {
     protected readonly _http = inject(HttpClient);
-    protected readonly _lastCheckedForChanges = new Map<string, string>([[ROOT_CHANGES_KEY, '0']]);
+    protected readonly _lastCheckedForChanges = new Map<string, string>([[ROOT_CHANGES_KEY, new Date().toISOString()]]);
     protected abstract readonly _defaultModelPath: string;
 
     get<T = I[]>(): Observable<T>;