diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f883553..ec4feb8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,7 +32,6 @@ jobs:
       matrix:
         node-version:
           - 18
-          - 16
     name: Node.js ${{ matrix.node-version }} Quick
     steps:
       - name: Checkout the repository
@@ -50,28 +49,3 @@ jobs:
         run: pnpm install --frozen-lockfile --ignore-scripts
       - name: Run unit tests
         run: pnpm unit
-  old:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version:
-          - 14
-          - 12
-    name: Node.js ${{ matrix.node-version }} Quick
-    steps:
-      - name: Checkout the repository
-        uses: actions/checkout@v3
-      - name: Install pnpm
-        uses: pnpm/action-setup@v1
-        with:
-          version: 3
-        env:
-          ACTIONS_ALLOW_UNSECURE_COMMANDS: true
-      - name: Install Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
-        with:
-          node-version: ${{ matrix.node-version }}
-      - name: Install dependencies
-        run: pnpm install --no-frozen-lockfile --ignore-scripts
-      - name: Run unit tests
-        run: pnpm unit
diff --git a/package.json b/package.json
index 85485c2..002a071 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   "license": "MIT",
   "repository": "postcss/postcss-dark-theme-class",
   "engines": {
-    "node": ">=12.0"
+    "node": ">=18.0"
   },
   "funding": [
     {