diff --git a/js/package.json b/js/package.json
index 36a919f..3d1c0e9 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,7 +1,8 @@
 {
   "name": "jupyter_rfb",
-  "version": "0.1.0",
+  "version": "0.4.3",
   "description": "Remote Frame Buffer for Jupyter",
+  "license": "MIT",
   "author": "Almar Klein",
   "main": "lib/index.js",
   "repository": {
@@ -30,9 +31,10 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "devDependencies": {
-    "@jupyterlab/builder": "^3.0.0",
+    "@jupyterlab/builder": "^4.1.3",
+    "rimraf": "^2.6.1",
     "webpack": "^5",
-    "rimraf": "^2.6.1"
+    "webpack-cli": "^5.1.4"
   },
   "dependencies": {
     "@jupyter-widgets/base": "^1.1 || ^2 || ^3 || ^4 || ^5 || ^6",
diff --git a/jupyter_rfb/_version.py b/jupyter_rfb/_version.py
index dbb8f42..ece2949 100644
--- a/jupyter_rfb/_version.py
+++ b/jupyter_rfb/_version.py
@@ -1,5 +1,5 @@
 # Module version
-version_info = (0, 4, 2, "final", 0)
+version_info = (0, 4, 3, "final", 0)
 
 # Module version stage suffix map
 _specifier_ = {"alpha": "a", "beta": "b", "candidate": "rc", "final": ""}