diff --git a/composer.json b/composer.json
index ac779db..0c2dc40 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
   },
   "require": {
     "ongr/elasticsearch-dsl": "^5.0.5",
-    "pimcore/pimcore": ">=5.5.0 <6.5"
+    "pimcore/pimcore": ">=5.5.0 <6.6"
   },
   "autoload": {
     "psr-4": {