diff --git a/jqueryui/jqueryui-tests.ts b/jqueryui/jqueryui-tests.ts
index 378c6d293b..e9f4023808 100644
--- a/jqueryui/jqueryui-tests.ts
+++ b/jqueryui/jqueryui-tests.ts
@@ -1441,6 +1441,7 @@ function test_dialog() {
     $(".selector").dialog({ buttons: [ { text: "Ok", click: function () { $(this).dialog("close"); } } ] } );
     $(".selector").dialog({ closeOnEscape: false });
     $(".selector").dialog({ closeText: "hide" });
+    $(".selector").dialog({ appendTo: "appendTo" });
     $(".selector").dialog({ dialogClass: "alert" });
     $(".selector").dialog({ disabled: true });
     $(".selector").dialog({ draggable: false });
@@ -1490,7 +1491,8 @@ function test_slider() {
         value: 123,
         range: "min",
         animate: true,
-        orientation: "vertical"
+        orientation: "vertical",
+        highlight: true
     });
     $("#slider-range").slider({
         range: true,
diff --git a/jqueryui/jqueryui.d.ts b/jqueryui/jqueryui.d.ts
index bd494d4962..b3edd59545 100644
--- a/jqueryui/jqueryui.d.ts
+++ b/jqueryui/jqueryui.d.ts
@@ -345,6 +345,7 @@ declare module JQueryUI {
         buttons?: { [buttonText: string]: (event?: Event) => void } | DialogButtonOptions[];
         closeOnEscape?: boolean;
         closeText?: string;
+        appendTo?: string;
         dialogClass?: string;
         disabled?: boolean;
         draggable?: boolean;
@@ -635,6 +636,7 @@ declare module JQueryUI {
         step?: number;
         value?: number;
         values?: number[];
+        highlight?: boolean;
     }
 
     interface SliderUIParams {