diff --git a/.github/workflows/ci-prb.yml b/.github/workflows/ci-prb.yml
index b330db43..b810d0c5 100644
--- a/.github/workflows/ci-prb.yml
+++ b/.github/workflows/ci-prb.yml
@@ -16,7 +16,7 @@ jobs:
         os: [ ubuntu-latest ]
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up JDK ${{ matrix.java }}
         uses: actions/setup-java@v5
         with:
diff --git a/.github/workflows/ci-release-javadocs.yml b/.github/workflows/ci-release-javadocs.yml
index 9c417907..19ba674b 100644
--- a/.github/workflows/ci-release-javadocs.yml
+++ b/.github/workflows/ci-release-javadocs.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up JDK 21
         uses: actions/setup-java@v5
         with:
diff --git a/.github/workflows/ci-release.yml b/.github/workflows/ci-release.yml
index f790bcb6..422ecced 100644
--- a/.github/workflows/ci-release.yml
+++ b/.github/workflows/ci-release.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up JDK 21
         uses: actions/setup-java@v5
         with:
diff --git a/.github/workflows/ci-snapshot.yml b/.github/workflows/ci-snapshot.yml
index 34672e55..bdf7e620 100644
--- a/.github/workflows/ci-snapshot.yml
+++ b/.github/workflows/ci-snapshot.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up JDK 21
         uses: actions/setup-java@v5
         with:
diff --git a/.github/workflows/gradle-wrapper-validation.yml b/.github/workflows/gradle-wrapper-validation.yml
index 70a770dd..fd6ac31d 100644
--- a/.github/workflows/gradle-wrapper-validation.yml
+++ b/.github/workflows/gradle-wrapper-validation.yml
@@ -7,5 +7,5 @@ jobs:
   validation:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gradle/actions/wrapper-validation@v5