diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d63dd38..3c5175e 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
       - name: Run ShellCheck
@@ -59,7 +59,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
       - name: Parse every shell script with bash -n
diff --git a/.github/workflows/secret-scan.yml b/.github/workflows/secret-scan.yml
index 65dde0b..cc4a2f3 100644
--- a/.github/workflows/secret-scan.yml
+++ b/.github/workflows/secret-scan.yml
@@ -43,7 +43,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository (full history)
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
         with:
           # Full history required so gitleaks can scan every commit, not
           # just the tip. Shallow clones miss historical leaks.
@@ -67,7 +67,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository (full history)
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
         with:
           fetch-depth: 0
           persist-credentials: false
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9060085..0f77991 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -45,7 +45,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest]
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false