diff --git a/jquery-validation-unobtrusive/jquery-validation-unobtrusive-tests.ts b/jquery-validation-unobtrusive/jquery-validation-unobtrusive-tests.ts
index 94bd18bdc..96ccbe325 100644
--- a/jquery-validation-unobtrusive/jquery-validation-unobtrusive-tests.ts
+++ b/jquery-validation-unobtrusive/jquery-validation-unobtrusive-tests.ts
@@ -35,6 +35,19 @@ $.validator.unobtrusive.adapters
         return null;
     });
 
+// Test `Adapters` indexer
+var adapterName = $.validator.unobtrusive.adapters[0].name;
+
+// Test `Adapters` iterator
+$.each($.validator.unobtrusive.adapters, function (index, adapter) {
+    console.log(adapter.name);
+    console.log(adapter.params);
+    console.log(adapter.adapt);
+});
+
+// Test `Adapters` array
+$.validator.unobtrusive.adapters.push({ name: "adapter", params: ["param1"], adapt: () => { } });
+
 // Test overloads for `parseElement`
 $.validator.unobtrusive.parseElement("form");
 $.validator.unobtrusive.parseElement(document);
diff --git a/jquery-validation-unobtrusive/jquery-validation-unobtrusive.d.ts b/jquery-validation-unobtrusive/jquery-validation-unobtrusive.d.ts
index 866d6607d..f14b58913 100644
--- a/jquery-validation-unobtrusive/jquery-validation-unobtrusive.d.ts
+++ b/jquery-validation-unobtrusive/jquery-validation-unobtrusive.d.ts
@@ -8,10 +8,15 @@
 declare module MicrosoftJQueryUnobtrusiveValidation {
     type JQuerySelector = string | Document | Element | JQuery;
 
-    interface Adapters {
-        [key: string]: Function;
+    interface Adapter {
+        name: string;
+        params: string[];
+        adapt: Function
+    }
+
+    interface Adapters extends Array<Adapter> {
         add(adapterName: string, fn: Function): Adapters;
-        add(adapterName: string, params: any, fn: Function): Adapters;
+        add(adapterName: string, params: string[], fn: Function): Adapters;
         addMinMax(adapterName: string, minRuleName: string, maxRuleName: string, minMaxRuleName: string, minAttribute?: string, maxAttribute?: string): Adapters;
         addSingleVal(adapterName: string, ruleName: string): Adapters;
         addSingleVal(adapterName: string, attribute: string, ruleName: string): Adapters;