diff --git a/composer.json b/composer.json
index 80d7faa..6cbc3c1 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "require-dev": {
         "phpunit/phpunit": "^5.7",
         "squizlabs/php_codesniffer": "^3.0",
-        "silverstripe/versioned": "^1@dev"
+        "silverstripe/versioned": "^1"
     },
     "extra": {
         "screenshots": [