diff --git a/.github/workflows/backport.yml b/.github/workflows/backport.yml
index 8cf8442111..1338bac0f0 100644
--- a/.github/workflows/backport.yml
+++ b/.github/workflows/backport.yml
@@ -11,7 +11,7 @@ jobs:
     if: github.repository_owner == 'freifunk-gluon' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Create backport PRs
         uses: korthout/backport-action@v3.3.0
         with:
diff --git a/.github/workflows/build-container.yml b/.github/workflows/build-container.yml
index 84a3fc1c36..d54a159b9e 100644
--- a/.github/workflows/build-container.yml
+++ b/.github/workflows/build-container.yml
@@ -21,7 +21,7 @@ jobs:
     permissions: write-all
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
diff --git a/.github/workflows/build-docs.yml b/.github/workflows/build-docs.yml
index 8fce3c1f40..5eafe8db6a 100644
--- a/.github/workflows/build-docs.yml
+++ b/.github/workflows/build-docs.yml
@@ -17,7 +17,7 @@ jobs:
     name: docs
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install Dependencies
         run: sudo pip3 install -r docs/requirements.txt
       - name: Build documentation
diff --git a/.github/workflows/build-gluon.yml b/.github/workflows/build-gluon.yml
index c52861a783..b85148c997 100644
--- a/.github/workflows/build-gluon.yml
+++ b/.github/workflows/build-gluon.yml
@@ -25,7 +25,7 @@ jobs:
     outputs:
       targets: ${{ steps.filter.outputs.changes }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       # Filter targets based on changed files
       - uses: dorny/paths-filter@v3
@@ -43,7 +43,7 @@ jobs:
         target: ${{ fromJSON(needs.changed.outputs.targets) }}
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Show system information
         run: contrib/actions/show-system-info.sh
diff --git a/.github/workflows/bump-gluon.yml b/.github/workflows/bump-gluon.yml
index dbfa4447ef..7d94d582eb 100644
--- a/.github/workflows/bump-gluon.yml
+++ b/.github/workflows/bump-gluon.yml
@@ -17,7 +17,7 @@ jobs:
       COMMIT_EMAIL: bot@freifunk-gluon.github.io
     steps:
       - name: Clone Gluon
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.inputs.branch }}
       
diff --git a/.github/workflows/check-ci.yml b/.github/workflows/check-ci.yml
index ba273fb0f1..34b2eaafcf 100644
--- a/.github/workflows/check-ci.yml
+++ b/.github/workflows/check-ci.yml
@@ -11,7 +11,7 @@ jobs:
     name: Check generated CI
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install example site
         run: ln -s ./docs/site-example ./site
       - name: Update CI
diff --git a/.github/workflows/check-patches.yml b/.github/workflows/check-patches.yml
index 7bf91ab3eb..5851fcfc9f 100644
--- a/.github/workflows/check-patches.yml
+++ b/.github/workflows/check-patches.yml
@@ -20,7 +20,7 @@ jobs:
     name: Check patches
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Refresh patches
         run: make refresh-patches GLUON_SITEDIR="contrib/ci/minimal-site"
       - name: Show diff
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 19f5f37f3e..e8758a7bc7 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -11,7 +11,7 @@ jobs:
     name: Lua
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install Dependencies
         run: sudo apt-get -y update && sudo apt-get -y install lua-check
       - name: Install example site
@@ -23,7 +23,7 @@ jobs:
     name: Shell
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install Dependencies
         run: sudo apt-get -y update && sudo apt-get -y install shellcheck
       - name: Install example site
@@ -35,7 +35,7 @@ jobs:
     name: Editorconfig
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install Dependencies
         run: sudo apt install curl tar
       - name: Install editorconfig-checker