diff --git a/composer.json b/composer.json
index ea85627..92c1737 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
   ],
   "require": {
     "php": "^7.3",
-    "ext-rdkafka": "^4.0.0",
+    "ext-rdkafka": "^4.0|^5.0",
     "ext-json": "*"
   },
   "require-dev": {