diff --git a/package-lock.json b/package-lock.json
index 2a4c38d..565193c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "avrgirl-arduino",
-  "version": "3.0.2",
+  "version": "4.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index fb76f99..7248737 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "avrgirl-arduino",
-  "version": "3.0.2",
+  "version": "4.0.0",
   "description": "A NodeJS library for flashing compiled sketch files to Arduino microcontroller boards.",
   "bin": "./bin/cli.js",
   "main": "avrgirl-arduino.js",