diff --git a/js/package.json b/js/package.json
index 615c2092..ba7dfef1 100644
--- a/js/package.json
+++ b/js/package.json
@@ -77,7 +77,7 @@
     "webpack-cli": "^3.2.3"
   },
   "dependencies": {
-    "@jupyter-widgets/base": "^1 || ^2.0.2 || ^3 || ^4",
+    "@jupyter-widgets/base": "^1 || ^2.0.2 || ^3 || ^4 || ^6",
     "@jupyter-widgets/controls": "^1 || ^2",
     "css-loader": "^0.28.4",
     "d3": "^5.7.0",