diff --git a/lib/lib.es5.d.ts b/lib/lib.es5.d.ts
index 840fd68278906..670e5ad8440eb 100644
--- a/lib/lib.es5.d.ts
+++ b/lib/lib.es5.d.ts
@@ -986,7 +986,7 @@ interface JSON {
       * @param reviver A function that transforms the results. This function is called for each member of the object.
       * If a member contains nested objects, the nested objects are transformed before the parent object is.
       */
-    parse(text: string, reviver?: (key: any, value: any) => any): any;
+    parse(text: string, reviver?: (key: any, value: any) => any): object | number | string | boolean | null;
     /**
       * Converts a JavaScript value to a JavaScript Object Notation (JSON) string.
       * @param value A JavaScript value, usually an object or array, to be converted.
diff --git a/tests/lib/lib.d.ts b/tests/lib/lib.d.ts
index ad17bec673e95..84919788ea97e 100644
--- a/tests/lib/lib.d.ts
+++ b/tests/lib/lib.d.ts
@@ -974,7 +974,7 @@ interface JSON {
       * @param reviver A function that transforms the results. This function is called for each member of the object.
       * If a member contains nested objects, the nested objects are transformed before the parent object is.
       */
-    parse(text: string, reviver?: (key: any, value: any) => any): any;
+    parse(text: string, reviver?: (key: any, value: any) => any): object | number | string | boolean | null;
     /**
       * Converts a JavaScript value to a JavaScript Object Notation (JSON) string.
       * @param value A JavaScript value, usually an object or array, to be converted.