diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d7c0811..7ff64e3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,14 +25,14 @@ jobs:
           wget -q $HUGO_RELEASE_SRC/download/v$VERSION/$HUGO_DEB_FILE
           sudo dpkg -i $HUGO_DEB_FILE
       - name: Check out repository code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: 'recursive'
       - name: Build production site
         run: |
           hugo
       - name: Upload artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: public-prod
           path: public/
@@ -41,7 +41,7 @@ jobs:
           rm -rf public/*
           hugo -D
       - name: Upload artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: public-draft
           path: public/
@@ -51,9 +51,9 @@ jobs:
     runs-on: [ubuntu-20.04]
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download Hugo build
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: public-prod
           path: public
@@ -71,11 +71,11 @@ jobs:
     if: ${{ github.ref == 'refs/heads/main' }}
     steps:
       - name: Download Hugo build
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: public-prod
       - name: Deploy to GH pages
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: .