diff --git a/.github/workflows/fix-php-code-style-issues.yml b/.github/workflows/fix-php-code-style-issues.yml
index b525600..424dc53 100644
--- a/.github/workflows/fix-php-code-style-issues.yml
+++ b/.github/workflows/fix-php-code-style-issues.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.head_ref }}
 
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 3b0d547..aea2159 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -20,7 +20,7 @@ jobs:
     name: Test with PHP ${{ matrix.php-versions }} on ${{ matrix.operating-system }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
diff --git a/.github/workflows/test-coding-standards.yml b/.github/workflows/test-coding-standards.yml
index c84d406..1d4c02e 100644
--- a/.github/workflows/test-coding-standards.yml
+++ b/.github/workflows/test-coding-standards.yml
@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
diff --git a/.github/workflows/test-phpstan.yml b/.github/workflows/test-phpstan.yml
index ebe4f55..e4b9ecb 100644
--- a/.github/workflows/test-phpstan.yml
+++ b/.github/workflows/test-phpstan.yml
@@ -33,7 +33,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
diff --git a/.github/workflows/update-changelog.yml b/.github/workflows/update-changelog.yml
index ec40921..1f8c8fe 100644
--- a/.github/workflows/update-changelog.yml
+++ b/.github/workflows/update-changelog.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: main