diff --git a/.github/workflows/deliver17.yml b/.github/workflows/deliver17.yml
index cd2ccf3..4fe24ed 100644
--- a/.github/workflows/deliver17.yml
+++ b/.github/workflows/deliver17.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK 17
         uses: actions/setup-java@v3
         with:
diff --git a/.github/workflows/deliver18.yml b/.github/workflows/deliver18.yml
index 780da03..5254c13 100644
--- a/.github/workflows/deliver18.yml
+++ b/.github/workflows/deliver18.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK 18
         uses: actions/setup-java@v3
         with:
diff --git a/.github/workflows/deliver19.yml b/.github/workflows/deliver19.yml
index aab631b..032c0d4 100644
--- a/.github/workflows/deliver19.yml
+++ b/.github/workflows/deliver19.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK 19
         uses: actions/setup-java@v3
         with:
diff --git a/.github/workflows/deliver20.yml b/.github/workflows/deliver20.yml
index 8e29318..10240a4 100644
--- a/.github/workflows/deliver20.yml
+++ b/.github/workflows/deliver20.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK 20
         uses: actions/setup-java@v3
         with:
diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 0a074c0..3fc0bb3 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK 17
         uses: actions/setup-java@v3
         with: