diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b9b8be0c..768a9c4a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -27,7 +27,7 @@ jobs:
       matrix:
         java: [11, 17, 21, 25]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-java@v4
       with:
         distribution: temurin
@@ -41,7 +41,7 @@ jobs:
     name: "units (8)"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v4
         with:
           java-version: 8
@@ -63,7 +63,7 @@ jobs:
     steps:
     - name: Support longpaths
       run: git config --system core.longpaths true
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-java@v4
       with:
         distribution: temurin
@@ -78,7 +78,7 @@ jobs:
       matrix:
         java: [17]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-java@v4
       with:
         distribution: temurin
@@ -88,7 +88,7 @@ jobs:
   javadoc:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-java@v4
       with:
         distribution: temurin
@@ -100,7 +100,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-java@v4
       with:
         distribution: temurin
@@ -112,7 +112,7 @@ jobs:
   clirr:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-java@v4
       with:
         distribution: temurin
diff --git a/.github/workflows/renovate_config_check.yaml b/.github/workflows/renovate_config_check.yaml
index 47b9e87c..f65c0c3b 100644
--- a/.github/workflows/renovate_config_check.yaml
+++ b/.github/workflows/renovate_config_check.yaml
@@ -11,7 +11,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Set up Node.js
       uses: actions/setup-node@v4
diff --git a/.github/workflows/samples.yaml b/.github/workflows/samples.yaml
index f833b802..34514003 100644
--- a/.github/workflows/samples.yaml
+++ b/.github/workflows/samples.yaml
@@ -20,7 +20,7 @@ jobs:
   checkstyle:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v4
         with:
           distribution: temurin
diff --git a/.github/workflows/unmanaged_dependency_check.yaml b/.github/workflows/unmanaged_dependency_check.yaml
index 9a46c9fc..c28e52ec 100644
--- a/.github/workflows/unmanaged_dependency_check.yaml
+++ b/.github/workflows/unmanaged_dependency_check.yaml
@@ -5,7 +5,7 @@ jobs:
   unmanaged_dependency_check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions/setup-java@v4
       with:
         distribution: temurin