diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index 038d522..9763c7b 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -14,27 +14,22 @@ jobs:
 
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [19.x, 20.x, 21.x]
-        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
-
     steps:
-    - uses: actions/checkout@v3
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v3
-      with:
-        node-version: ${{ matrix.node-version }}
-        cache: "npm"
-    - run: npm install
-    - run: npm run build
-    - run: npm test
-    - run: sudo apt-get install xvfb
-    - run: xvfb-run --auto-servernum npm run test:chrome
-    - run: xvfb-run --auto-servernum npm run test:firefox
+      - uses: actions/checkout@v3
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20.x"
+          cache: "npm"
+      - run: npm install
+      - run: npm run build
+      - run: npm test
+      - run: sudo apt-get install xvfb
+      - run: xvfb-run --auto-servernum npm run test:chrome
+      - run: xvfb-run --auto-servernum npm run test:firefox
 
-    - name: Publish to npm
-      if: github.ref == 'refs/heads/master' && github.event_name == 'push'
-      env:
-        NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-      run: npm publish
+      - name: Publish to npm
+        if: github.ref == 'refs/heads/master' && github.event_name == 'push'
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npm publish