diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 558c7659..f06669d6 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -11,9 +11,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out docs
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check out website
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: dita-ot/website
           token: ${{ secrets.COMMITTER_TOKEN }}
diff --git a/.github/workflows/gradle-wrapper-validation.yml b/.github/workflows/gradle-wrapper-validation.yml
index f3f3d233..48553d2d 100644
--- a/.github/workflows/gradle-wrapper-validation.yml
+++ b/.github/workflows/gradle-wrapper-validation.yml
@@ -9,5 +9,5 @@ jobs:
     name: 'Validation'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
diff --git a/.github/workflows/prettier.yml b/.github/workflows/prettier.yml
index 4fc499c4..2707f3ef 100644
--- a/.github/workflows/prettier.yml
+++ b/.github/workflows/prettier.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # Make sure the actual branch is checked out when running on pull requests
           ref: ${{ github.ref }}
diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index fd0aea66..1cd40dff 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -17,9 +17,9 @@ jobs:
       WEBSITE_BRANCH: 'master'
     steps:
       - name: Check out docs
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check out website
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: dita-ot/website
           ref: ${{ env.WEBSITE_BRANCH }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c9c82844..dca91cd0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -36,7 +36,7 @@ jobs:
           fi
 
       - name: Check out docs
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ env.TAG }}
 
@@ -51,7 +51,7 @@ jobs:
           java-version: 17
 
       - name: Check out website
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: dita-ot/website
           token: ${{ secrets.COMMITTER_TOKEN }}