diff --git a/.circleci/config.yml b/.circleci/config.yml
index 6ba369a..5b59e56 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -87,6 +87,9 @@ jobs:
             git -C ~/app-builder checkout b85740334fec875f5dd8dcd22eb1f729599109db
             make --directory=~/app-builder build
             ln -sfv ~/app-builder/dist/app-builder_darwin_amd64/app-builder ./node_modules/app-builder-bin/mac/
+      - run:
+          name: Upgrade to Node 14
+          command: brew install node@14
       - save_cache:
           name: Save Homebrew cache
           paths:
@@ -132,6 +135,12 @@ jobs:
             echo 'Adding libexec/git-core to PATH...'
             echo 'For more details see https://github.com/appveyor/ci/issues/2420'
             echo 'export PATH="$PATH:/c/Program Files/Git/mingw64/libexec/git-core"' >> $BASH_ENV
+      - run:
+          # nvm for Windows doesn't accept partial version numbers, so specify exact :(
+          name: Upgrade to Node 14.17.0
+          command: |
+            nvm install 14.17.0
+            nvm use 14.17.0
       - checkout
       - npm_install:
           npmCacheDir: "C:/Users/circleci/AppData/Roaming/npm-cache"