diff --git a/composer.json b/composer.json
index 5a3e83e2..42a9c342 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,8 @@
     "require": {
         "php": "^7.1",
         "symfony/serializer": "^3.0|^4.0",
-        "paragonie/random_compat": "*"
+        "paragonie/random_compat": "*",
+        "elasticsearch/elasticsearch": "^7.0"
     },
     "require-dev": {
         "elasticsearch/elasticsearch": "^7.0",