diff --git a/select2/select2-tests.ts b/select2/select2-tests.ts
index d3a21b188e..b63d3cc1e7 100644
--- a/select2/select2-tests.ts
+++ b/select2/select2-tests.ts
@@ -56,6 +56,7 @@ $("#e6").select2({
     ajax: {
         url: "http://api.rottentomatoes.com/api/public/v1.0/movies.json",
         dataType: 'jsonp',
+        cache: false,
         data: function (term, page) {
             return {
                 q: term,
@@ -195,4 +196,4 @@ $("#e8").select2("enable", false);
 $("#e8").select2("readonly", false);
 $("#e8").select2('container');
 $("#e8").select2('onSortStart');
-$("#e8").select2('onSortEnd');
\ No newline at end of file
+$("#e8").select2('onSortEnd');
diff --git a/select2/select2.d.ts b/select2/select2.d.ts
index 0b4543596f..259dd16cf8 100644
--- a/select2/select2.d.ts
+++ b/select2/select2.d.ts
@@ -26,6 +26,7 @@ interface Select2AjaxOptions {
     url?: any;
     dataType?: string;
     quietMillis?: number;
+    cache?: boolean;
     data?: (term: string, page: number, context: any) => any;
     results?: (term: any, page: number, context: any) => any;
 }