diff --git a/composer.json b/composer.json
index 62530f7..05b2acf 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     },
     "require-dev": {
         "react-parallel/pool-tests": "^5.0.0",
-        "wyrihaximus/async-test-utilities": "^9.3.0",
+        "wyrihaximus/async-test-utilities": "^10.0.0",
         "wyrihaximus/makefiles": "^0.4.2"
     },
     "autoload": {