diff --git a/composer.json b/composer.json
index 68c0d1a..e3bc45e 100644
--- a/composer.json
+++ b/composer.json
@@ -23,20 +23,20 @@
         "php": "^7.1||^8.0",
         "psr/http-client": "^1.0",
         "psr/cache": "^1.0",
-        "psr/http-message": "^1.0",
+        "psr/http-message": "^2.0",
         "psr/http-message-implementation": "^1.0",
         "psr/http-factory-implementation": "^1.0",
         "php-http/discovery": "^1.6",
         "nyholm/psr7": "^1.0",
         "paragonie/certainty": "^2.4",
         "divineomega/do-file-cache-psr-6": "^2.0",
-        "divineomega/psr-18-guzzle-adapter": "^1.0"
+        "divineomega/psr-18-guzzle-adapter": "1.3.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7.0||^8.0",
         "fzaninotto/faker": "^1.7",
         "vimeo/psalm": "^4",
-        "kriswallsmith/buzz": "^1.0",
+        "kriswallsmith/buzz": "^2.0",
         "symfony/cache": "^4.2.12",
         "php-coveralls/php-coveralls": "^2.1"
     },
@@ -59,5 +59,22 @@
         }
     },
     "minimum-stability": "dev",
-    "prefer-stable": true
+    "prefer-stable": true,
+    "config": {
+        "allow-plugins": {
+            "php-http/discovery": false
+        }
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/langleyfoxall/psr-18-guzzle-adapter",
+            "no-api": true
+        },
+        {
+            "type": "vcs",
+            "url": "https://github.com/langleyfoxall/Buzz",
+            "no-api": true
+        }
+    ]
 }