diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 6f742be..51b97fc 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -11,7 +11,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v2
         with:
diff --git a/.github/workflows/security-audit.yml b/.github/workflows/security-audit.yml
index bf99a2b..fd12342 100644
--- a/.github/workflows/security-audit.yml
+++ b/.github/workflows/security-audit.yml
@@ -13,7 +13,7 @@ jobs:
   security_audit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
         with:
           toolchain: stable
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index dc33dff..06214b1 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
         with:
           toolchain: stable
diff --git a/.github/workflows/windows-build.yml b/.github/workflows/windows-build.yml
index 6119c2a..01cb5b3 100644
--- a/.github/workflows/windows-build.yml
+++ b/.github/workflows/windows-build.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: windows-2025
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
         with:
           toolchain: stable