diff --git a/.github/workflows/build-pdf.yml b/.github/workflows/build-pdf.yml
index c50f1aa..98c5b77 100644
--- a/.github/workflows/build-pdf.yml
+++ b/.github/workflows/build-pdf.yml
@@ -28,7 +28,7 @@ jobs:
       id-token: write           # OIDC signing for attestations
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
 
       - name: Compile LaTeX
         uses: xu-cheng/latex-action@6549dc21effb2730855a1281407ecfcececc6c1b  # v4.1.0
@@ -60,7 +60,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
 
       - name: Download built PDF
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c  # v8.0.1
diff --git a/.github/workflows/gitleaks.yml b/.github/workflows/gitleaks.yml
index 0bf9602..d124899 100644
--- a/.github/workflows/gitleaks.yml
+++ b/.github/workflows/gitleaks.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
         with:
           fetch-depth: 0  # full history required for full-repo scan