diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 9e8bc35..ee85b9e 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 }}
@@ -63,7 +63,7 @@ jobs:
     runs-on: ubuntu-latest
     name: semver
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install stable
@@ -79,7 +79,7 @@ jobs:
     runs-on: ubuntu-latest
     name: nightly / doc
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install nightly
@@ -94,7 +94,7 @@ jobs:
     runs-on: ubuntu-latest
     name: ubuntu / stable / features
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install stable
@@ -115,7 +115,7 @@ jobs:
         msrv: ["1.65"]
     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/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 2541725..d9f29c6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -25,7 +25,7 @@ jobs:
         # toolchain
         toolchain: [stable, beta]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install ${{ matrix.toolchain }}
@@ -68,7 +68,7 @@ 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
@@ -96,7 +96,7 @@ 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