diff --git a/.github/workflows/cs.yml b/.github/workflows/cs.yml
index 30771fe..2fb7ee0 100644
--- a/.github/workflows/cs.yml
+++ b/.github/workflows/cs.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 65db4a0..8fe406d 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2
diff --git a/.github/workflows/markdown.yml b/.github/workflows/markdown.yml
index 7c50279..c6f7baf 100644
--- a/.github/workflows/markdown.yml
+++ b/.github/workflows/markdown.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # This action also handles the caching of the dependencies.
       # https://github.com/actions/setup-node
@@ -56,7 +56,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up node and enable caching of dependencies
         uses: actions/setup-node@v3
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a61a8d1..0369226 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -95,7 +95,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2