diff --git a/composer.json b/composer.json
index aa98a0c..3040a55 100644
--- a/composer.json
+++ b/composer.json
@@ -20,6 +20,7 @@
         "psr/simple-cache": "^1.0 || ^2.0 || ^3.0",
         "react/event-loop": "^1.5",
         "react/http": "^1.11",
+        "react/promise": "^3.0",
         "react/stream": "^1.4",
         "symfony/finder": "^6.4 || ^7.2"
     },