diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c01e1f1f..47aacf04 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
             extras: "dev"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -81,7 +81,7 @@ jobs:
     timeout-minutes: 30
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -156,7 +156,7 @@ jobs:
     timeout-minutes: 20
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 401472d2..6481b8be 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -21,7 +21,7 @@ jobs:
       contents: read
       packages: write   # push to GHCR under this repository's owner
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
diff --git a/.github/workflows/leak-guard.yml b/.github/workflows/leak-guard.yml
index 8536e6be..d8505dcf 100644
--- a/.github/workflows/leak-guard.yml
+++ b/.github/workflows/leak-guard.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           # Full history so the scan covers every commit, not just the tip.
           fetch-depth: 0
diff --git a/.github/workflows/mcp-registry-publish.yml b/.github/workflows/mcp-registry-publish.yml
index 60f2bd10..ab5a7346 100644
--- a/.github/workflows/mcp-registry-publish.yml
+++ b/.github/workflows/mcp-registry-publish.yml
@@ -22,7 +22,7 @@ jobs:
       id-token: write   # required to mint the OIDC token
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       # The release workflow uploads the wheels/sdist to PyPI in parallel with
       # this job, and the registry rejects a server.json whose package version
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f72cf9c8..a9c98977 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"
@@ -99,7 +99,7 @@ jobs:
         # native clang frontend, not a frontend-less sdist fallback.
         os: [ubuntu-latest, ubuntu-24.04-arm, macos-14, windows-latest]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"