diff --git a/composer.json b/composer.json
index d58d254..5cb1935 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,6 @@
     "require": {
         "php": ">=5.6.0",
         "symfony/validator": "2.*",
-		"deblan/csv": ">1.0"
+		"deblan/csv": "1.1.x-dev"
     }
 }