diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 54d964b..bddb8be 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
   lint-test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Install uv
         uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 48cd3f0..b2e24fe 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -54,7 +54,7 @@ jobs:
             build-mode: none
 
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
diff --git a/.github/workflows/content-guards.yml b/.github/workflows/content-guards.yml
index 19a35ba..6500924 100644
--- a/.github/workflows/content-guards.yml
+++ b/.github/workflows/content-guards.yml
@@ -24,7 +24,7 @@ jobs:
       contents: read
       pull-requests: write # gitleaks-action lists PR commits (and comments on leaks)
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           fetch-depth: 0
       - uses: gitleaks/gitleaks-action@e0c47f4f8be36e29cdc102c57e68cb5cbf0e8d1e # v3.0.0
@@ -34,7 +34,7 @@ jobs:
   ai-signatures:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Scan content for AI-authorship signatures (BLOCKING)
         shell: bash
         run: |