diff --git a/composer.json b/composer.json
index c9d39c0..60891c3 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "symfony/finder": "2.*",
         "symfony/dom-crawler": "2.*",
         "symfony/css-selector": "2.*",
-        "atoum/atoum": ">=1.0,<3.0",
+        "atoum/atoum": ">=1.0,<2.4",
         "fzaninotto/faker": "1.*"
     },
     "require-dev": {