diff --git a/composer.json b/composer.json
index e7b3a44a..d1d9a757 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "ext-json": "*",
         "fig/http-message-util": "^1.1.5",
         "psr/http-factory": "^1.0.2",
-        "psr/http-message": "^1.1.0",
+        "psr/http-message": "^2.0.0",
         "psr/http-server-middleware": "^1.0.2"
     },
     "require-dev": {