diff --git a/src/lib/services/generic.service.ts b/src/lib/services/generic.service.ts
index 817b54c..d9978bf 100644
--- a/src/lib/services/generic.service.ts
+++ b/src/lib/services/generic.service.ts
@@ -4,7 +4,8 @@ import { Observable } from 'rxjs';
 import { HeadersConfiguration, List, RequiredParam, Validate } from '../utils';
 import { map } from 'rxjs/operators';
 
-const ROOT_CHANGES_KEY = 'root';
+export const ROOT_CHANGES_KEY = 'root';
+export const LAST_CHECKED_OFFSET = 15000;
 
 export interface HeaderOptions {
     readonly authorization?: boolean;
@@ -23,7 +24,7 @@ export interface QueryParam {
  */
 export abstract class GenericService<I> {
     protected readonly _http = inject(HttpClient);
-    protected readonly _lastCheckedForChanges = new Map<string, string>([[ROOT_CHANGES_KEY, new Date().toISOString()]]);
+    protected readonly _lastCheckedForChanges = new Map<string, string>([[ROOT_CHANGES_KEY, new Date(Date.now() - LAST_CHECKED_OFFSET).toISOString()]]);
     protected abstract readonly _defaultModelPath: string;
 
     get<T = I[]>(): Observable<T>;
@@ -144,6 +145,6 @@ export abstract class GenericService<I> {
     }
 
     protected _updateLastChanged(key = ROOT_CHANGES_KEY): void {
-        this._lastCheckedForChanges.set(key, new Date().toISOString());
+        this._lastCheckedForChanges.set(key, new Date(Date.now() - LAST_CHECKED_OFFSET).toISOString());
     }
 }