diff --git a/composer-dist.json b/composer-dist.json
index 32040731b..80806c777 100644
--- a/composer-dist.json
+++ b/composer-dist.json
@@ -28,7 +28,7 @@
         "php-di/php-di": "^6.4",
         "slim/psr7": "^1.7",
         "bacon/bacon-qr-code": "^3.0",
-        "seeddms/core": "dev-master",
+        "seeddms/core": "dev-__CORE_BRANCH__",
         "seeddms/lucene": "dev-master",
         "seeddms/preview": "dev-master",
         "seeddms/sqlitefts": "dev-master",