diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2068486..4733925 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     name: Backend · Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -43,7 +43,7 @@ jobs:
     name: Backend · Lint (ruff)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -66,7 +66,7 @@ jobs:
     name: Frontend · Lint & Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Node
         uses: actions/setup-node@v4
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 97d36a5..da5610a 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -25,7 +25,7 @@ jobs:
         language: [python, javascript-typescript]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 4dcdb02..eab793f 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0 # full history so secrets in any commit are caught
 
@@ -33,7 +33,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Review dependencies
         uses: actions/dependency-review-action@v4