diff --git a/composer.json b/composer.json
index c0859a2..9537229 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
   },
   "require-dev": {
     "react-parallel/pool-tests": "^7.0.0",
-    "wyrihaximus/async-test-utilities": "^13.3.0",
+    "wyrihaximus/async-test-utilities": "^14.4.0",
     "wyrihaximus/makefiles": "^0.12.3"
   },
   "autoload": {