diff --git a/composer.json b/composer.json
index 895d49f..41532c6 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,10 @@
         "psr/http-server-handler":  "~1.0",
         "psr/http-server-middleware": "~1.0"
     },
+    "provide": {
+        "psr/http-message-implementation": "1.0",
+        "psr/http-factory-implementation": "1.0"
+    },
     "autoload": {
         "psr-4": {
             "WellRESTed\\": "src/"