diff --git a/composer.json b/composer.json
index b75d39e15..c4de75e6b 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     "ext-sockets": "*",
     "doctrine/annotations": "^1.6",
     "php-di/phpdoc-reader": "^2.0",
-    "psr/container": "^1.0",
+    "psr/container": "^1.0 || ^2.0",
     "psr/http-message": "^1.0",
     "psr/http-server-handler": "^1.0",
     "psr/http-server-middleware": "^1.0",