diff --git a/composer.json b/composer.json
index f8e441a..c9d2960 100644
--- a/composer.json
+++ b/composer.json
@@ -16,8 +16,8 @@
 
     "require": {
         "php":          ">=5.3.2",
-        "behat/behat":  ">=2.4.0,<2.5.0",
-        "behat/mink":   ">=1.4.0,<1.5.0"
+        "behat/behat":  ">=2.4,<2.5-dev",
+        "behat/mink":   ">=1.4,<1.5-dev"
     },
 
     "require-dev": {