diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 569d032..3681519 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
         python-version: ["3.11", "3.12"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -128,7 +128,7 @@ jobs:
     name: codeql lane (live)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"
@@ -158,7 +158,7 @@ jobs:
         python-version: ["3.11"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -206,7 +206,7 @@ jobs:
       id-token: write  # OIDC token for PyPI Trusted Publishing (no long-lived secrets)
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/code-scanning.yml b/.github/workflows/code-scanning.yml
index 1e982d4..5b32758 100644
--- a/.github/workflows/code-scanning.yml
+++ b/.github/workflows/code-scanning.yml
@@ -17,7 +17,7 @@ jobs:
       security-events: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/design-methodology.yml b/.github/workflows/design-methodology.yml
index f83aa52..403dd2e 100644
--- a/.github/workflows/design-methodology.yml
+++ b/.github/workflows/design-methodology.yml
@@ -13,7 +13,7 @@ jobs:
   design-methodology:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"