diff --git a/composer.json b/composer.json
index e5b0b0c9..56cf94e5 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
   },
   "require": {
     "php": "5.6 - 7.0", "ext-ionCube-Loader": "*",
-    "oxid-esales/oxideshop-ce": "6.0 - 6.5",
+    "oxid-esales/oxideshop-ce": "6.0 - 6.6",
     "ext-openssl": "*",
     "ext-mbstring": "*",
     "ext-dom": "*",