diff --git a/composer.json b/composer.json
index d489038..51115a7 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
         "typo3/cms-core": "^12.4",
         "typo3/cms-backend": "^12.4",
         "typo3/cms-frontend": "^12.4",
-        "psr/http-message": "^1.0"
+        "psr/http-message": "^1.0 || ^2.0"
     },
     "require-dev": {
         "typo3/testing-framework": "^8.0",