diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0dac156e..0aab582d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -30,7 +30,7 @@ jobs:
     runs-on: macos-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       # Pin Xcode explicitly. GitHub-hosted runner images drift their default
       # Xcode without notice, which surfaces as false-red or false-green
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index ecdd4d62..e1f8e783 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -26,7 +26,7 @@ jobs:
     runs-on: macos-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       # Use the prebuilt SwiftLint on macos-latest. The image ships a recent
       # version via Homebrew; calling `swiftlint version` in the log captures
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f640b197..834a4e3d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -71,7 +71,7 @@ jobs:
       has_sparkle_key: ${{ steps.sparkle-key.outputs.has_key }}
 
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Select Xcode
         uses: maxim-lobanov/setup-xcode@ed7a3b1fda3918c0306d1b724322adc0b8cc0a90 # v1.7.0
@@ -664,7 +664,7 @@ jobs:
       url: ${{ steps.deploy-pages.outputs.page_url }}
 
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Select Python
         uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 69ec3e66..9dab13c6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -34,7 +34,7 @@ jobs:
     runs-on: macos-15
     timeout-minutes: 25
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       # Same Xcode pin policy as the Build workflow. Drift between these two
       # would let a test-only cert mismatch turn into spooky green-red
diff --git a/.github/workflows/xcodegen.yml b/.github/workflows/xcodegen.yml
index ce32e4e3..2c397ac9 100644
--- a/.github/workflows/xcodegen.yml
+++ b/.github/workflows/xcodegen.yml
@@ -28,7 +28,7 @@ jobs:
     runs-on: macos-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Install / verify XcodeGen
         run: |