diff --git a/toastr/toastr.d.ts b/toastr/toastr.d.ts
index f1a038704..8d3047ad7 100644
--- a/toastr/toastr.d.ts
+++ b/toastr/toastr.d.ts
@@ -62,6 +62,10 @@ interface ToastrOptions {
     */
     positionClass?: string;
     /**
+    * Where toast should be displayed - background
+    */
+    backgroundpositionClass?: string;
+    /**
     * Time in milliseconds that the toast should be displayed
     */
     timeOut?: number;
@@ -146,4 +150,4 @@ interface Toastr {
     version: string;
 }
 
-declare var toastr: Toastr;
\ No newline at end of file
+declare var toastr: Toastr;