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 00fe302..8730d51 100644
--- a/.github/workflows/ci_linux.yml
+++ b/.github/workflows/ci_linux.yml
@@ -41,7 +41,7 @@ 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 7012b28..a54c979 100644
--- a/.github/workflows/ci_macos.yml
+++ b/.github/workflows/ci_macos.yml
@@ -32,7 +32,7 @@ jobs:
         compiler: ["clang-latest", "clang-second-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/cron_codeql.yml b/.github/workflows/cron_codeql.yml
index dc2172f..3b982e9 100644
--- a/.github/workflows/cron_codeql.yml
+++ b/.github/workflows/cron_codeql.yml
@@ -32,7 +32,7 @@ jobs:
       image: ghcr.io/seqan/gcc-second-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v4
diff --git a/.github/workflows/cron_sanitizer.yml b/.github/workflows/cron_sanitizer.yml
index 6db4dc0..96ee5dc 100644
--- a/.github/workflows/cron_sanitizer.yml
+++ b/.github/workflows/cron_sanitizer.yml
@@ -79,7 +79,7 @@ jobs:
       image: ${{ matrix.image || '' }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup compiler
         if: contains(matrix.os, 'macos')
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