diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index ff1dad0..fd3b546 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -22,7 +22,7 @@ jobs:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: configure Hugo
         run: |
           set -x &&
@@ -33,7 +33,7 @@ jobs:
           deb=hugo_extended_${HUGO_VERSION}_linux-amd64.deb &&
           curl -LO https://github.com/gohugoio/hugo/releases/download/v$HUGO_VERSION/$deb &&
           sudo dpkg -i $deb
-      - uses: actions/configure-pages@v5
+      - uses: actions/configure-pages@v6
         id: pages
       - name: run Hugo to build the pages
         env:
@@ -44,8 +44,8 @@ jobs:
       - uses: actions/setup-node@v6
       - name: pre-render the Graphviz diagrams
         run: npm install && node ./script/graphviz-ssr.js
-      - uses: actions/upload-pages-artifact@v3
+      - uses: actions/upload-pages-artifact@v5
         with:
           path: ./public
-      - uses: actions/deploy-pages@v4
+      - uses: actions/deploy-pages@v5
         id: deployment
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 4b1c6ad..f72b87e 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -5,7 +5,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: configure Hugo
       run: |
         set -x &&
@@ -22,7 +22,7 @@ jobs:
     - name: build tar archive
       run: cd public && tar czvf ../pages.tar.gz *
     - name: Upload build artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
       with:
         name: pages
         path: pages.tar.gz