diff --git a/composer.json b/composer.json
index 3888376..dceeb20 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
   },
   "require": {
     "php": ">=5.6",
-    "oxid-esales/oxideshop-ce": "6.0 - 6.3",
+    "oxid-esales/oxideshop-ce": "6.3 - 6.3",
     "spipu/html2pdf": "^5.2"
   },
   "autoload": {