diff --git a/types/undertaker/index.d.ts b/types/undertaker/index.d.ts
index f7775ce28b..f4dcb58417 100644
--- a/types/undertaker/index.d.ts
+++ b/types/undertaker/index.d.ts
@@ -57,14 +57,6 @@ declare class Undertaker extends EventEmitter {
      */
     task(taskName: string, fn: Undertaker.TaskFunction): void;
 
-    /**
-     * Register the task by the taskName.
-     * @param taskName - Task name.
-     * @param dependencies - Task dependencies.
-     * @param fn - Task function.
-     */
-    task(taskName: string, dependencies: string[], fn: Undertaker.TaskFunction): void;
-
     /**
      * Register the task by the name property of the function.
      * @param fn - Task function.
diff --git a/types/undertaker/undertaker-tests.ts b/types/undertaker/undertaker-tests.ts
index d4db785245..224732b720 100644
--- a/types/undertaker/undertaker-tests.ts
+++ b/types/undertaker/undertaker-tests.ts
@@ -22,13 +22,6 @@ taker.task("task3", () => {
     });
 });
 
-taker.task("task3", ["task1"], () => {
-    return new Promise((resolve, reject) => {
-        // do things depending on "task1"
-        resolve(); // when everything is done
-    });
-});
-
 taker.task("combined", taker.series("task1", "task2"));
 
 taker.task("all", taker.parallel("combined", "task3"));