diff --git a/composer.json b/composer.json
index f9389013..efe5154b 100755
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "myparcelnl/sdk",
-    "version": "v3.1.8",
+    "version": "v4.0.0",
     "description": "This package is designed to send and receive data from MyParcel by means of an API.",
     "homepage": "https://www.myparcel.nl",
     "keywords": ["MyParcel", "My Parcel", "Flespakket", "Post NL", "PostNL"],