diff --git a/composer.json b/composer.json
index 89f28b0..95f0082 100644
--- a/composer.json
+++ b/composer.json
@@ -20,17 +20,17 @@
         }
     ],
     "require": {
-        "silverstripe/vendor-plugin": "^1.0",
-        "silverstripe/framework": "^4@dev",
-        "silverstripe/cms": "^4@dev",
-        "silverstripe/reports": "^4@dev",
-        "silverstripe/siteconfig": "^4@dev"
+        "silverstripe/vendor-plugin": "^1",
+        "silverstripe/framework": "^4",
+        "silverstripe/cms": "^4",
+        "silverstripe/reports": "^4",
+        "silverstripe/siteconfig": "^4"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7",
-        "squizlabs/php_codesniffer": "^3.0",
-        "silverstripe/behat-extension": "^3@dev",
-        "silverstripe/serve": "dev-master",
+        "squizlabs/php_codesniffer": "^3",
+        "silverstripe/behat-extension": "^3",
+        "silverstripe/serve": "^2",
         "se/selenium-server-standalone": "2.41.0"
     },
     "suggest": {