diff --git a/composer.json b/composer.json
index 4cfe5dd..29abfdf 100644
--- a/composer.json
+++ b/composer.json
@@ -9,8 +9,8 @@
     ],
     "require": {
         "php": "^7.4 || ^8.0",
-        "silverstripe/cms": "^4",
-        "silverstripe/asset-admin": "^1"
+        "silverstripe/cms": "4.13.x-dev",
+        "silverstripe/asset-admin": "1.13.x-dev"
     },
     "require-dev": {
         "ext-curl": "*",