diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 418504e..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-version: 2
-
-# Set defaults to reuse
-defaults: &defaults
-  working_directory: ~/repo
-  docker:
-    - image: circleci/node:8.10.0
-
-jobs:
-  test:
-    <<: *defaults
-    steps:
-      - checkout
-
-      - restore_cache:
-          keys:
-            - v2-dependencies-{{ checksum "package.json" }}
-            # fallback to using the latest cache if no exact match is found
-            - v2-dependencies-
-
-      - run: npm install
-      - run:
-          name: Run tests
-          command: npm test
-      - run:
-          name: Send to Coveralls
-          command: cat coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
-      - save_cache:
-          paths:
-            - node_modules
-          key: v2-dependencies-{{ checksum "package.json" }}
-
-      - persist_to_workspace:
-          root: ~/repo
-          paths: .
-
-workflows:
-  version: 2
-  test-deploy:
-    jobs:
-      - test:
-          filters:
-            tags:
-              only: /^v[0-9]+\.[0-9]+\.[0-9]+/
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..ee22447
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,47 @@
+name: CI
+
+on:
+  push:
+    branches: ['**']
+    tags: ['**']
+  pull_request:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Test (Node ${{ matrix.node-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [18, 20]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: npm
+          cache-dependency-path: package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
+
+      - name: Upload coverage to Coveralls
+        if: success() && matrix.node-version == 20
+        uses: coverallsapp/github-action@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: coverage/lcov.info
+        continue-on-error: true
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index bf5641b..71bb0b1 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -1,26 +1,37 @@
-on: push
 name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [master]
+
 jobs:
-  filterBranch:
-    name: Filter branch
+  deploy-docs:
+    name: Deploy docs
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
-    - uses: actions/checkout@master
-    - name: Filter branch
-      uses: actions/bin/filter@master
-      with:
-        args: branch master
-    - name: Install
-      uses: actions/npm@master
-      with:
-        args: install --prefix ./website
-    - name: Update version
-      uses: clay/docusaurus-github-action@master
-      with:
-        args: version
-    - name: Build and push docs
-      uses: clay/docusaurus-github-action@master
-      env:
-        DEPLOY_SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
-      with:
-        args: deploy
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '16'
+
+      - name: Install website dependencies
+        run: npm install
+        working-directory: website
+
+      - name: Update Docusaurus version
+        uses: clay/docusaurus-github-action@f3ea5271a51c1f06e456d55e490993985210c02b
+        with:
+          args: version
+
+      - name: Build and publish to gh-pages
+        uses: clay/docusaurus-github-action@f3ea5271a51c1f06e456d55e490993985210c02b
+        env:
+          DEPLOY_SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
+        with:
+          args: deploy