diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index cbe4348..bf1a026 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Create release
         uses: crazy-max/ghaction-github-release@v2
diff --git a/.github/workflows/test-coding-standards.yml b/.github/workflows/test-coding-standards.yml
index 390d346..3fba3ad 100644
--- a/.github/workflows/test-coding-standards.yml
+++ b/.github/workflows/test-coding-standards.yml
@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        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 e77b773..6e542a5 100644
--- a/.github/workflows/test-phpstan.yml
+++ b/.github/workflows/test-phpstan.yml
@@ -37,7 +37,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
diff --git a/.github/workflows/test-phpunit.yml b/.github/workflows/test-phpunit.yml
index 5527137..5e60c92 100644
--- a/.github/workflows/test-phpunit.yml
+++ b/.github/workflows/test-phpunit.yml
@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2