diff --git a/src/types/swiper-class.d.ts b/src/types/swiper-class.d.ts
index 182f603b1..8e01703e0 100644
--- a/src/types/swiper-class.d.ts
+++ b/src/types/swiper-class.d.ts
@@ -190,6 +190,11 @@ interface Swiper extends SwiperClass<SwiperEvents> {
    */
   allowTouchMove: boolean;
 
+  /**
+   * Direction of sliding
+   */
+  swipeDirection: 'prev' | 'next';
+
   /**
    * !INTERNAL
    */