diff --git a/npm/ng-packs/packages/core/src/lib/models/session.ts b/npm/ng-packs/packages/core/src/lib/models/session.ts
index bbdd788d8f..7ce516a180 100644
--- a/npm/ng-packs/packages/core/src/lib/models/session.ts
+++ b/npm/ng-packs/packages/core/src/lib/models/session.ts
@@ -4,9 +4,17 @@ export namespace Session {
   export interface State {
     language: string;
     tenant: CurrentTenantDto;
+    /**
+     *
+     * @deprecated To be deleted in v5.0
+     */
     sessionDetail: SessionDetail;
   }
 
+  /**
+   *
+   * @deprecated To be deleted in v5.0
+   */
   export interface SessionDetail {
     openedTabCount: number;
     lastExitTime: number;