diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5716c8e..d5a2a6b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,11 +11,6 @@ jobs:
   lint-and-test:
     runs-on: ubuntu-latest
 
-    strategy:
-      fail-fast: false
-      matrix:
-        node: [20, 22]
-
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -23,7 +18,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node }}
+          node-version: 22
           cache: npm
 
       - name: Install
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index f61acf8..b66da8a 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -23,13 +23,36 @@ jobs:
         with:
           node-version: 22
           cache: npm
+          registry-url: https://npm.pkg.github.com
+          scope: '@hanlogy'
 
       - run: npm ci
       - run: npm run lint
       - run: npm test
       - run: npm run build
 
+      - name: Read local version
+        id: local
+        run: |
+          VERSION="$(node --input-type=module -e "import fs from 'node:fs'; console.log(JSON.parse(fs.readFileSync('package.json','utf8')).version)")"
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Check published version
+        id: check
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          PKG="@hanlogy/ts-lib"
+          REG="https://npm.pkg.github.com"
+          PUBLISHED="$(npm view "$PKG" version --registry="$REG" 2>/dev/null || echo "")"
+          if [ "$PUBLISHED" = "${{ steps.local.outputs.version }}" ]; then
+            echo "should_publish=false" >> "$GITHUB_OUTPUT"
+          else
+            echo "should_publish=true" >> "$GITHUB_OUTPUT"
+          fi
+
       - name: Publish
+        if: steps.check.outputs.should_publish == 'true'
         run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}