diff --git a/.github/workflows/ci_license_check.yml b/.github/workflows/ci_license_check.yml
index 1ecd0d4..df71d96 100644
--- a/.github/workflows/ci_license_check.yml
+++ b/.github/workflows/ci_license_check.yml
@@ -23,7 +23,7 @@ jobs:
     if: github.repository_owner == 'seqan' || github.event_name == 'workflow_dispatch'
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: REUSE Compliance Check
         uses: fsfe/reuse-action@v6
diff --git a/.github/workflows/ci_linux.yml b/.github/workflows/ci_linux.yml
index 469ea86..222367a 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: Configure tests
         run: |
diff --git a/.github/workflows/ci_macos.yml b/.github/workflows/ci_macos.yml
index 0d7e7db..7ec34f4 100644
--- a/.github/workflows/ci_macos.yml
+++ b/.github/workflows/ci_macos.yml
@@ -39,7 +39,7 @@ jobs:
             cpp: 26
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup compiler
         uses: seqan/actions/setup-compiler@main
diff --git a/.github/workflows/ci_readme.yml b/.github/workflows/ci_readme.yml
index 85fea5b..4e87f5a 100644
--- a/.github/workflows/ci_readme.yml
+++ b/.github/workflows/ci_readme.yml
@@ -29,7 +29,7 @@ jobs:
     if: github.repository_owner == 'seqan' || github.event_name == 'workflow_dispatch'
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           token: ${{ secrets.SEQAN_ACTIONS_PAT }}
 
diff --git a/.github/workflows/ci_win.yml b/.github/workflows/ci_win.yml
index 6705601..d9d6eaa 100644
--- a/.github/workflows/ci_win.yml
+++ b/.github/workflows/ci_win.yml
@@ -35,7 +35,7 @@ jobs:
         uses: ilammy/msvc-dev-cmd@v1
 
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Configure tests
         run: |