diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2f77b6f4..3f65e13d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
         with:
           # Conformance fixtures live in the openarmature-spec submodule.
           submodules: recursive
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 1bae37f4..904433c7 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -40,7 +40,7 @@ jobs:
         language: [actions, python]
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@68bde559dea0fdcac2102bfdf6230c5f70eb485e  # v4.35.4
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 0c275426..0a702e07 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
         with:
           # mkdocstrings imports the package source; the spec submodule
           # is not referenced by docs but keep the conventional recursive
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 17a0ce21..42b693a5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
         with:
           # Conformance fixtures live in the openarmature-spec submodule.
           submodules: recursive
@@ -108,7 +108,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
         with:
           submodules: recursive
 
@@ -186,7 +186,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
 
       - name: Download dist artifact
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c  # v8.0.1