diff --git a/.github/workflows/deploy-site.yaml b/.github/workflows/deploy-site.yaml
index a7ed4241ac8..8a4c502c024 100644
--- a/.github/workflows/deploy-site.yaml
+++ b/.github/workflows/deploy-site.yaml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     # checkout to the commit that has been pushed
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Setup Hugo
       uses: peaceiris/actions-hugo@v2.6.0
diff --git a/.github/workflows/html-proof.yaml b/.github/workflows/html-proof.yaml
index 45aa58ead88..d4fd7714ca0 100644
--- a/.github/workflows/html-proof.yaml
+++ b/.github/workflows/html-proof.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     # checkout to the commit that has been pushed
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true  # Fetch Hugo themes (true OR recursive)
         fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod