diff --git a/package-lock.json b/package-lock.json
index 2d6c1dc..6da0c00 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "node-simconnect",
-  "version": "3.6.3-alpha.0",
+  "version": "4.0.0-alpha.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "node-simconnect",
-      "version": "3.6.3-alpha.0",
+      "version": "4.0.0-alpha.0",
       "license": "LGPL-3.0-or-later",
       "dependencies": {
         "@types/node": "*",
diff --git a/package.json b/package.json
index 0aa5e64..0959502 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-simconnect",
-  "version": "3.6.3-alpha.0",
+  "version": "4.0.0-alpha.0",
   "description": "A SimConnect client library for Node.JS.",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",