diff --git a/composer.json b/composer.json
index 62edc07..75172e1 100644
--- a/composer.json
+++ b/composer.json
@@ -34,6 +34,8 @@
     "php": ">=5.6",
     "oxid-esales/oxideshop-ce": "6.10 - 6.12",
     "web-auth/webauthn-lib": "^3.3",
+    "nyholm/psr7": "^1.5.1",
+    "nyholm/psr7-server": "^1.0.2",
     "ext-json": "*",
     "ext-soap": "*",
     "ext-PDO": "*"