diff --git a/composer.json b/composer.json
index 0ad3478..c2d54df 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
   ],
   "require": {
     "php": "^7.0",
-    "elasticsearch/elasticsearch": "6.0.1"
+    "elasticsearch/elasticsearch": "^6.0.1"
   },
   "require-dev": {
     "phpunit/phpunit": "^6.4",