diff --git a/composer.json b/composer.json
index 4b4b3ad..3d6e473 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     "satooshi/php-coveralls": "^1.0",
     "phpunit/phpunit": "4.1.0"
   },
-  "version": "0.5.5-dev",
+  "version": "0.5.6-dev",
   "autoload": {
     "files": [ "registration.php" ],
     "psr-4": {