diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index 74035ec0413b5..77c6de312314c 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -70,7 +70,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up PHP
         uses: shivammathur/setup-php@d30ad8b1843ace22e6698ab99bbafaa747b6bd0d # v2.24.0
@@ -145,7 +145,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
diff --git a/.github/workflows/end-to-end-tests.yml b/.github/workflows/end-to-end-tests.yml
index 09a6b838970d2..5105c7003a03b 100644
--- a/.github/workflows/end-to-end-tests.yml
+++ b/.github/workflows/end-to-end-tests.yml
@@ -68,7 +68,7 @@ jobs:
           echo "PHP_FPM_GID=$(id -g)" >> $GITHUB_ENV
 
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
diff --git a/.github/workflows/javascript-tests.yml b/.github/workflows/javascript-tests.yml
index 7bd256c0a04fa..dd17bb37c3c5f 100644
--- a/.github/workflows/javascript-tests.yml
+++ b/.github/workflows/javascript-tests.yml
@@ -62,7 +62,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
diff --git a/.github/workflows/performance.yml b/.github/workflows/performance.yml
index 7b6b513b37dc5..abbf57eca10a0 100644
--- a/.github/workflows/performance.yml
+++ b/.github/workflows/performance.yml
@@ -87,7 +87,7 @@ jobs:
           echo "PHP_FPM_GID=$(id -g)" >> $GITHUB_ENV
 
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
diff --git a/.github/workflows/php-compatibility.yml b/.github/workflows/php-compatibility.yml
index b5f885e9bcda8..4e9acc48c9b4c 100644
--- a/.github/workflows/php-compatibility.yml
+++ b/.github/workflows/php-compatibility.yml
@@ -65,7 +65,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up PHP
         uses: shivammathur/setup-php@d30ad8b1843ace22e6698ab99bbafaa747b6bd0d # v2.24.0
diff --git a/.github/workflows/phpunit-tests.yml b/.github/workflows/phpunit-tests.yml
index 618e1d039fc21..7bee2d33f8883 100644
--- a/.github/workflows/phpunit-tests.yml
+++ b/.github/workflows/phpunit-tests.yml
@@ -97,7 +97,7 @@ jobs:
           echo "PHP_FPM_GID=$(id -g)" >> $GITHUB_ENV
 
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
@@ -184,7 +184,7 @@ jobs:
 
       - name: Checkout the WordPress Test Reporter
         if: ${{ github.repository == 'WordPress/wordpress-develop' && github.ref == 'refs/heads/trunk' && matrix.report }}
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           repository: 'WordPress/phpunit-test-runner'
           path: 'test-runner'
diff --git a/.github/workflows/test-and-zip-default-themes.yml b/.github/workflows/test-and-zip-default-themes.yml
index d1b4e4f022f14..6c32579708175 100644
--- a/.github/workflows/test-and-zip-default-themes.yml
+++ b/.github/workflows/test-and-zip-default-themes.yml
@@ -79,7 +79,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           ref: ${{ github.event_name == 'workflow_dispatch' && inputs.branch || github.ref }}
 
@@ -133,7 +133,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           ref: ${{ github.event_name == 'workflow_dispatch' && inputs.branch || github.ref }}
 
diff --git a/.github/workflows/test-coverage.yml b/.github/workflows/test-coverage.yml
index ea085feadd4c8..d63bbbd80f216 100644
--- a/.github/workflows/test-coverage.yml
+++ b/.github/workflows/test-coverage.yml
@@ -76,7 +76,7 @@ jobs:
           echo "PHP_FPM_GID=$(id -g)" >> $GITHUB_ENV
 
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
diff --git a/.github/workflows/test-npm.yml b/.github/workflows/test-npm.yml
index 4777169c09563..d3d1cc228ea02 100644
--- a/.github/workflows/test-npm.yml
+++ b/.github/workflows/test-npm.yml
@@ -68,7 +68,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
@@ -134,7 +134,7 @@ jobs:
     if: ${{ github.repository == 'WordPress/wordpress-develop' }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
       - name: Set up Node.js
         uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0