diff --git a/composer.json b/composer.json
index fc6f20b..74fc16a 100644
--- a/composer.json
+++ b/composer.json
@@ -16,11 +16,11 @@
     ],
 
     "require": {
-        "symfony/yaml": "2.*",
-        "symfony/config": "2.6.*"
+        "symfony/yaml": "2.*|3.*",
+        "symfony/config": "2.6.*|3.*"
     },
     "require-dev": {
-        "symfony/dependency-injection": "2.*",
+        "symfony/dependency-injection": "2.*|3.*",
         "phpunit/phpunit": "4.6.*"
     },
     "autoload": {