diff --git a/.github/workflows/ci_coverage.yml b/.github/workflows/ci_coverage.yml
index 1631ca8..4bce0c3 100644
--- a/.github/workflows/ci_coverage.yml
+++ b/.github/workflows/ci_coverage.yml
@@ -34,7 +34,7 @@ jobs:
       image: ghcr.io/seqan/${{ matrix.compiler }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup cache
         uses: seqan/actions/setup-actions-cache@main
diff --git a/.github/workflows/ci_license.yml b/.github/workflows/ci_license.yml
index 5929a72..8dbbab6 100644
--- a/.github/workflows/ci_license.yml
+++ b/.github/workflows/ci_license.yml
@@ -25,7 +25,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: REUSE Compliance Check
         continue-on-error: false # Set to true to not fail the build in case of non-compliance.
diff --git a/.github/workflows/ci_linux.yml b/.github/workflows/ci_linux.yml
index 43e84de..42c8a8c 100644
--- a/.github/workflows/ci_linux.yml
+++ b/.github/workflows/ci_linux.yml
@@ -34,7 +34,7 @@ jobs:
       image: ghcr.io/seqan/${{ matrix.compiler }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup cache
         uses: seqan/actions/setup-actions-cache@main
diff --git a/.github/workflows/ci_macos.yml b/.github/workflows/ci_macos.yml
index a3dee5c..1e39c9a 100644
--- a/.github/workflows/ci_macos.yml
+++ b/.github/workflows/ci_macos.yml
@@ -32,7 +32,7 @@ jobs:
         compiler: ["clang-latest", "clang-second-latest", "clang-third-latest", "gcc-latest", "gcc-second-latest", "gcc-third-latest"]
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup toolchain
         uses: seqan/actions/setup-toolchain@main
diff --git a/.github/workflows/initialise.yml b/.github/workflows/initialise.yml
index 6207b35..0e736fb 100644
--- a/.github/workflows/initialise.yml
+++ b/.github/workflows/initialise.yml
@@ -26,7 +26,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Initialise
         run: |
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 5ec0f48..c71bee7 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -24,7 +24,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Run clang-format
         uses: DoozyX/clang-format-lint-action@v0.20