diff --git a/.circleci/config.yml b/.circleci/config.yml
index b0e738c9..2bb798bb 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,7 +2,7 @@ version: 2.1
 jobs:
   build:
     docker:
-      - image: circleci/node:6-browsers
+      - image: circleci/node:21.7.3-browsers
     steps:
       - checkout
       - run:
diff --git a/.nvmrc b/.nvmrc
index 48082f72..a7ac3d0d 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-12
+21.7.3
diff --git a/package.json b/package.json
index a6d40056..c0772e1a 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "dist/index.js",
   "repository": "https://github.com/notonthehighstreet/toga",
   "engines": {
-    "node": "^6.2.2",
+    "node": "^21.7.3",
     "npm": "^3.10.3"
   },
   "scripts": {