diff --git a/types/jspdf/index.d.ts b/types/jspdf/index.d.ts
index 63789a7093..c3507fc5e5 100644
--- a/types/jspdf/index.d.ts
+++ b/types/jspdf/index.d.ts
@@ -1,8 +1,9 @@
-// Type definitions for jsPDF 1.2
+// Type definitions for jsPDF 1.3
 // Project: https://github.com/MrRio/jsPDF
 // Definitions by: Amber Schühmacher <https://github.com/amberjs>
 //                 Kevin Gonnord <https://github.com/lleios>
 //                 Jackie Weng <https://github.com/jemerald>
+//                 Frank Brullo <https://github.com/frankbrullo>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare module 'jspdf' {
@@ -76,7 +77,8 @@ declare module 'jspdf' {
         setLineCap(style:string|number):jsPDF;
         setLineJoin(style:string|number):jsPDF;
         output(type?:string, options?:any):any;
-        save(filename:string):jsPDF;
+        save(filename:string): void;
+        save(filename:string, options: {returnPromise: boolean}): Promise<any>;
 
         /**
          * jsPDF plugins below:
@@ -184,7 +186,7 @@ declare module 'jspdf' {
             stroke():void;
             fill():void;
             translate(x:number, y:number):void;
-            measureText(text:string):number;
+            measureText(text:string):{ width: number };
         };
 
         // jsPDF plugin: fromHTML