diff --git a/composer.json b/composer.json
index 5bcaf5c..046c8ca 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,9 @@
 	"require-dev": {
 		"phpunit/phpunit": "7.4.3"
 	},
+	"provide": {
+		"psr/http-message-implementation": "1.0"
+	},
 	"autoload": {
 		"psr-4": {
 			"Sunrise\\Stream\\": "src/"