diff --git a/clients/GitHubEnterprise-3.8/composer.json b/clients/GitHubEnterprise-3.8/composer.json
index c8259051e13..53c1d96cf7a 100644
--- a/clients/GitHubEnterprise-3.8/composer.json
+++ b/clients/GitHubEnterprise-3.8/composer.json
@@ -21,7 +21,7 @@
     "wyrihaximus/react-awaitable-observable": "^1.0"
   },
   "require-dev": {
-    "wyrihaximus/async-test-utilities": "^7.0.3"
+    "wyrihaximus/async-test-utilities": "^7.0.3 || ^9.0.0"
   },
   "autoload": {
     "psr-4": {