diff --git a/.github/workflows/auto-cleanup-bot.yml b/.github/workflows/auto-cleanup-bot.yml
index 56b2f78a660b3fc..6f2118fefe8e00c 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 4c4331555b13a53..e869215205610cc 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 abc9030366839ca..9417f497f8974ee 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 28807a8d6eb4c1c..22158fd74c87742 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 ec9f40d2d913f3c..576fc9b8c264233 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 cfb477c123a4540..1f08e2df2939515 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 a2bb981f97bec2e..b9493f6d56ace3c 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 f83f47074285050..c9fcfcd2ae2e85f 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 a475212217ff236..07364ecb0c7ead4 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 bff1bf2350fa13a..2f8b2c0e24abd8f 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 4b7789a519a4617..94c70e086847df4 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 a33e757ce7fdd5c..665b2f3359981fa 100644
--- a/.github/workflows/pr-review-companion.yml
+++ b/.github/workflows/pr-review-companion.yml
@@ -76,7 +76,7 @@ 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 adb08e887b476b2..2f62a578a41ac73 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 0e072994ff7a0b3..10427efe1e483c0 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