diff --git a/.github/workflows/auto-cleanup-bot.yml b/.github/workflows/auto-cleanup-bot.yml
index 46020f4629d..e4fcb4c0c5c 100644
--- a/.github/workflows/auto-cleanup-bot.yml
+++ b/.github/workflows/auto-cleanup-bot.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
diff --git a/.github/workflows/interfacedata-updater.yml b/.github/workflows/interfacedata-updater.yml
index 4c4331555b1..e8692152056 100644
--- a/.github/workflows/interfacedata-updater.yml
+++ b/.github/workflows/interfacedata-updater.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout content
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           path: mdn-content
           ref: main
@@ -27,7 +27,7 @@ jobs:
           node-version-file: "mdn-content/.nvmrc"
 
       - name: Checkout webref
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: w3c/webref
           path: webref
diff --git a/.github/workflows/markdown-lint.yml b/.github/workflows/markdown-lint.yml
index abc90303668..9417f497f89 100644
--- a/.github/workflows/markdown-lint.yml
+++ b/.github/workflows/markdown-lint.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
diff --git a/.github/workflows/pr-check-lint_content.yml b/.github/workflows/pr-check-lint_content.yml
index 28807a8d6eb..22158fd74c8 100644
--- a/.github/workflows/pr-check-lint_content.yml
+++ b/.github/workflows/pr-check-lint_content.yml
@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout BASE
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Get changed files
         id: check
@@ -42,7 +42,7 @@ jobs:
 
       - name: Checkout HEAD
         if: steps.check.outputs.DIFF_DOCUMENTS
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           path: pr_head
diff --git a/.github/workflows/pr-check_cspell_lists.yml b/.github/workflows/pr-check_cspell_lists.yml
index ec9f40d2d91..576fc9b8c26 100644
--- a/.github/workflows/pr-check_cspell_lists.yml
+++ b/.github/workflows/pr-check_cspell_lists.yml
@@ -14,7 +14,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: |
diff --git a/.github/workflows/pr-check_javascript.yml b/.github/workflows/pr-check_javascript.yml
index cfb477c123a..1f08e2df293 100644
--- a/.github/workflows/pr-check_javascript.yml
+++ b/.github/workflows/pr-check_javascript.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
diff --git a/.github/workflows/pr-check_json.yml b/.github/workflows/pr-check_json.yml
index a2bb981f97b..b9493f6d56a 100644
--- a/.github/workflows/pr-check_json.yml
+++ b/.github/workflows/pr-check_json.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
diff --git a/.github/workflows/pr-check_redirects.yml b/.github/workflows/pr-check_redirects.yml
index f83f4707428..c9fcfcd2ae2 100644
--- a/.github/workflows/pr-check_redirects.yml
+++ b/.github/workflows/pr-check_redirects.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
diff --git a/.github/workflows/pr-check_scripts.yml b/.github/workflows/pr-check_scripts.yml
index a475212217f..07364ecb0c7 100644
--- a/.github/workflows/pr-check_scripts.yml
+++ b/.github/workflows/pr-check_scripts.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
@@ -98,7 +98,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
@@ -122,7 +122,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
diff --git a/.github/workflows/pr-check_url-issues.yml b/.github/workflows/pr-check_url-issues.yml
index bff1bf2350f..2f8b2c0e24a 100644
--- a/.github/workflows/pr-check_url-issues.yml
+++ b/.github/workflows/pr-check_url-issues.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/pr-check_yml.yml b/.github/workflows/pr-check_yml.yml
index 4b7789a519a..94c70e08684 100644
--- a/.github/workflows/pr-check_yml.yml
+++ b/.github/workflows/pr-check_yml.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
diff --git a/.github/workflows/pr-review-companion.yml b/.github/workflows/pr-review-companion.yml
index a25a9d4bfc9..0f821c68cec 100644
--- a/.github/workflows/pr-review-companion.yml
+++ b/.github/workflows/pr-review-companion.yml
@@ -74,7 +74,7 @@ jobs:
           process_gcloudignore: false
 
       - name: Checkout (mdn/content)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         if: steps.check.outputs.HAS_ARTIFACT
         with:
           path: content
diff --git a/.github/workflows/pr-test.yml b/.github/workflows/pr-test.yml
index adb08e887b4..2f62a578a41 100644
--- a/.github/workflows/pr-test.yml
+++ b/.github/workflows/pr-test.yml
@@ -29,7 +29,7 @@ jobs:
       BUILD_OUT_ROOT: build
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Get changed files
         id: check
diff --git a/.github/workflows/spelling-check-bot.yml b/.github/workflows/spelling-check-bot.yml
index e7de0bca22d..27218cfbd73 100644
--- a/.github/workflows/spelling-check-bot.yml
+++ b/.github/workflows/spelling-check-bot.yml
@@ -17,7 +17,7 @@ jobs:
       issues: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Node.js environment
         uses: actions/setup-node@v4