diff --git a/src/index.d.ts b/src/index.d.ts
index 96e95fb..33e9c34 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -45,6 +45,7 @@ export class ConsentString {
   private allowedVendorIds: number[];
 
   public getConsentString(updateDate?:boolean): string;
+  public getLastUpdated(): Date;
   public getVersion(): number;
   public getVendorListVersion(): number;
   public setGlobalVendorList(vendorList: VendorList): void;