diff --git a/composer.json b/composer.json
index dfacbfa..8fac57f 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
     "require": {
         "amphp/amp": "^2",
         "amphp/byte-stream": "^1",
-        "amphp/parallel": "^0.2"
+        "amphp/parallel": "^1"
     },
     "require-dev": {
         "amphp/phpunit-util": "^1",
diff --git a/lib/ParallelDriver.php b/lib/ParallelDriver.php
index b69b275..efb7015 100644
--- a/lib/ParallelDriver.php
+++ b/lib/ParallelDriver.php
@@ -29,7 +29,7 @@ class ParallelDriver implements Driver {
      */
     public function open(string $path, string $mode): Promise {
         return call(function () use ($path, $mode) {
-            $worker = $this->pool->get();
+            $worker = $this->pool->getWorker();
             try {
                 list($id, $size, $mode) = yield $worker->enqueue(new Internal\FileTask("fopen", [$path, $mode]));
             } catch (TaskException $exception) {