diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 8dcd324..9b40b63 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     name: nightly / fmt
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install nightly
@@ -40,7 +40,7 @@ jobs:
       matrix:
         toolchain: [stable]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache
@@ -60,7 +60,7 @@ jobs:
     runs-on: ubuntu-latest
     name: nightly / doc
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache
@@ -84,7 +84,7 @@ jobs:
           - bans licenses sources
     continue-on-error: ${{ matrix.checks == 'advisories'}}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: cargo-deny
@@ -96,7 +96,7 @@ jobs:
     runs-on: ubuntu-latest
     name: ubuntu / stable / features
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache
@@ -127,7 +127,7 @@ jobs:
         msrv: ["1.84"]
     name: ubuntu / ${{ matrix.msrv }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 646807c..72b2bc7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,7 +19,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Install Rust toolchain
@@ -45,7 +45,7 @@ jobs:
       cancel-in-progress: false
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Install Rust toolchain
diff --git a/.github/workflows/scheduled.yml b/.github/workflows/scheduled.yml
index cc1174b..6704469 100644
--- a/.github/workflows/scheduled.yml
+++ b/.github/workflows/scheduled.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     name: ubuntu / nightly
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 48ce4b6..dc3de46 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,7 +21,7 @@ jobs:
       CARGO_TERM_COLOR: always
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache
@@ -70,7 +70,7 @@ jobs:
   #   runs-on: ubuntu-latest
   #   name: ubuntu / stable / minimal-versions
   #   steps:
-  #     - uses: actions/checkout@v4
+  #     - uses: actions/checkout@v6
   #       with:
   #         submodules: true
   #     - name: Install stable
@@ -92,7 +92,7 @@ jobs:
       matrix:
         os: [macos-latest, windows-latest]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache
@@ -114,7 +114,7 @@ jobs:
     runs-on: ubuntu-latest
     name: ubuntu / stable / coverage
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: rust cache