diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index febe3c4..9183767 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
@@ -116,7 +116,7 @@ jobs:
                 msrv: ["1.79"]
         name: ubuntu / ${{ matrix.msrv }}
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v6
               with:
                   submodules: true
             - name: Install ${{ matrix.msrv }}
@@ -129,7 +129,7 @@ jobs:
         runs-on: ubuntu-latest
         name: toml / fmt
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v6
               with:
                   submodules: true
             - name: Install taplo
diff --git a/.github/workflows/nostd.yml b/.github/workflows/nostd.yml
index c12227a..33bb028 100644
--- a/.github/workflows/nostd.yml
+++ b/.github/workflows/nostd.yml
@@ -19,7 +19,7 @@ jobs:
       matrix:
         target: [thumbv7m-none-eabi, aarch64-unknown-none]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: Install stable
diff --git a/.github/workflows/safety.yml b/.github/workflows/safety.yml
index 9481dea..4af3b78 100644
--- a/.github/workflows/safety.yml
+++ b/.github/workflows/safety.yml
@@ -18,7 +18,7 @@ jobs:
     sanitizers:
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v6
               with:
                   submodules: true
             - name: Install nightly
@@ -54,7 +54,7 @@ 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 6826f77..1fa9b79 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