diff --git a/composer.json b/composer.json
index c0287b85..7a78ccd2 100644
--- a/composer.json
+++ b/composer.json
@@ -20,12 +20,12 @@
         }
     ],
     "require": {
-        "silverstripe/framework": "^4.0@dev",
-        "silverstripe/admin": "^1.0@dev",
-        "silverstripe/versioned": "^1.0@dev",
+        "silverstripe/framework": "^4.5@dev",
+        "silverstripe/admin": "^1.5@dev",
+        "silverstripe/versioned": "^1.5@dev",
         "silverstripe/config": "^1.0@dev",
-        "silverstripe/assets": "^1.0@dev",
-        "silverstripe/vendor-plugin": "^1.0"
+        "silverstripe/assets": "^1.5@dev",
+        "silverstripe/vendor-plugin": "^1"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7"
@@ -47,4 +47,4 @@
     },
     "minimum-stability": "dev",
     "prefer-stable": true
-}
\ No newline at end of file
+}