diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index c216223..63332f3 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     name: stable / fmt
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install stable
@@ -46,7 +46,7 @@ jobs:
         # Get early warning of new lints which are regularly introduced in beta channels.
         toolchain: [stable, beta]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install ${{ matrix.toolchain }}
@@ -66,7 +66,7 @@ jobs:
     runs-on: ubuntu-latest
     name: nightly / doc
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install nightly
@@ -81,7 +81,7 @@ jobs:
     runs-on: ubuntu-latest
     name: ubuntu / stable / features
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install stable
@@ -102,7 +102,7 @@ jobs:
         msrv: ["1.80.0"] # reqwests
     name: ubuntu / ${{ matrix.msrv }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install ${{ matrix.msrv }}
diff --git a/.github/workflows/safety.yml b/.github/workflows/safety.yml
index c527a96..80d93d4 100644
--- a/.github/workflows/safety.yml
+++ b/.github/workflows/safety.yml
@@ -19,7 +19,7 @@ jobs:
   sanitizers:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install nightly
@@ -57,7 +57,7 @@ jobs:
   # miri:
   #   runs-on: ubuntu-latest
   #   steps:
-  #     - uses: actions/checkout@v4
+  #     - uses: actions/checkout@v6
   #       with:
   #         submodules: true
   #     - run: |
diff --git a/.github/workflows/scheduled.yml b/.github/workflows/scheduled.yml
index 02aa275..e98886b 100644
--- a/.github/workflows/scheduled.yml
+++ b/.github/workflows/scheduled.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     name: ubuntu / nightly
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install nightly
@@ -42,7 +42,7 @@ jobs:
     # just redo what happened in the regular test job. Unfortunately, hashFiles only works in if on
     # steps, so we repeat it.
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install beta
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c5ae3a8..bd91885 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,7 +26,7 @@ jobs:
         # toolchain
         toolchain: [stable, beta]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install ${{ matrix.toolchain }}
@@ -69,7 +69,7 @@ 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
@@ -97,7 +97,7 @@ jobs:
         if: runner.os == 'Windows'
       - run: vcpkg install openssl:x64-windows-static-md
         if: runner.os == 'Windows'
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install stable
@@ -132,7 +132,7 @@ jobs:
     runs-on: ubuntu-latest
     name: ubuntu / stable / coverage
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install stable