diff --git a/.github/workflows/ci-spec.yml b/.github/workflows/ci-spec.yml
index 8ce0d392..7e3064d1 100644
--- a/.github/workflows/ci-spec.yml
+++ b/.github/workflows/ci-spec.yml
@@ -17,11 +17,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           submodules: "recursive"
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 16
       - name: Setup Bikeshed
@@ -35,7 +35,7 @@ jobs:
       - name: Run Bikeshed
         run: cd document/core && make bikeshed
       - name: Upload artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: core-rendered
           path: document/core/_build/html
@@ -44,13 +44,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Setup Bikeshed
         run: pip install bikeshed && bikeshed update
       - name: Run Bikeshed
         run: bikeshed spec "document/js-api/index.bs" "document/js-api/index.html"
       - name: Upload artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: js-api-rendered
           path: document/js-api/index.html
@@ -59,13 +59,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Setup Bikeshed
         run: pip install bikeshed && bikeshed update
       - name: Run Bikeshed
         run: bikeshed spec "document/web-api/index.bs" "document/web-api/index.html"
       - name: Upload artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: web-api-rendered
           path: document/web-api/index.html
@@ -75,7 +75,7 @@ jobs:
     needs: [build-core-spec]
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           submodules: "recursive"
       - name: Setup TexLive
@@ -85,7 +85,7 @@ jobs:
       - name: Build main spec
         run: cd document/metadata/code && make main
       - name: Upload artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: code-metadata-rendered
           path: document/metadata/code/_build/html
@@ -95,32 +95,32 @@ jobs:
     needs: [build-core-spec, build-js-api-spec, build-web-api-spec, build-code-metadata-spec]
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Create output directory
         run: mkdir _output && cp document/index.html _output/index.html
       - name: Download core spec artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: core-rendered
           path: _output/core
       - name: Download JS API spec artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: js-api-rendered
           path: _output/js-api
       - name: Download Web API spec artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: web-api-rendered
           path: _output/web-api
       - name: Download code metadata spec artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: code-metadata-rendered
           path: _output/metadata/code
       - name: Publish to GitHub Pages
         if: github.ref == 'refs/heads/main'
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           publish_dir: ./_output
           github_token: ${{ secrets.GITHUB_TOKEN }}