diff --git a/composer.json b/composer.json
index 090de5e..f58d502 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
         "ext-json": "*",
         "nyholm/psr7": "^1.8",
         "oat-sa/lib-lti1p3-core": "^7.0",
-        "psr/http-message": "^1.1",
+        "psr/http-message": "^1.1 || ^2.0",
         "psr/http-server-handler": "^1.0",
         "symfony/dom-crawler": "^4.4 || ^5.1 || ^6.4 || ^7.1",
         "twig/twig": "^3.0"