diff --git a/composer.json b/composer.json
index ca705f6..c80d338 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
   "name": "atrocore/dam",
   "description": "AtroDAM. Open source DAM application.",
   "require": {
-    "atrocore/core": "*"
+    "atrocore/core": "^1.9.0"
   },
   "autoload": {
     "psr-4": {