diff --git a/.forgejo/workflows/integration.yml b/.forgejo/workflows/integration.yml
index b2d1b5d..ba79cf2 100644
--- a/.forgejo/workflows/integration.yml
+++ b/.forgejo/workflows/integration.yml
@@ -9,7 +9,7 @@ jobs:
   integration:
     runs-on: lxc-trixie
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - id: forgejo
         uses: https://code.forgejo.org/actions/setup-forgejo@v3.1.0
diff --git a/.forgejo/workflows/tests.yml b/.forgejo/workflows/tests.yml
index a493847..f00722b 100644
--- a/.forgejo/workflows/tests.yml
+++ b/.forgejo/workflows/tests.yml
@@ -3,7 +3,7 @@ jobs:
   tests:
     runs-on: docker
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Unit tests of the supporting script forgejo-release.sh
         run: |
diff --git a/testdata/nested-upload-download/.forgejo/workflows/test.yml b/testdata/nested-upload-download/.forgejo/workflows/test.yml
index dab3c9a..83be00c 100644
--- a/testdata/nested-upload-download/.forgejo/workflows/test.yml
+++ b/testdata/nested-upload-download/.forgejo/workflows/test.yml
@@ -14,7 +14,7 @@ jobs:
   setup-forgejo:
     runs-on: self-hosted
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - id: forgejo
         uses: https://code.forgejo.org/actions/setup-forgejo@v3.1.0
         with:
diff --git a/testdata/upload-download/.forgejo/workflows/gpg-no-passphrase.yml b/testdata/upload-download/.forgejo/workflows/gpg-no-passphrase.yml
index 1068d69..bfd5469 100644
--- a/testdata/upload-download/.forgejo/workflows/gpg-no-passphrase.yml
+++ b/testdata/upload-download/.forgejo/workflows/gpg-no-passphrase.yml
@@ -92,7 +92,7 @@ jobs:
     container:
       image: 'data.forgejo.org/oci/node:24-bookworm'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         id: release-upload
         uses: SELF@vTest
diff --git a/testdata/upload-download/.forgejo/workflows/gpg.yml b/testdata/upload-download/.forgejo/workflows/gpg.yml
index c33af75..ea94668 100644
--- a/testdata/upload-download/.forgejo/workflows/gpg.yml
+++ b/testdata/upload-download/.forgejo/workflows/gpg.yml
@@ -27,7 +27,7 @@ jobs:
   upload-gpg:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         id: release-upload
         uses: SELF@vTest
diff --git a/testdata/upload-download/.forgejo/workflows/test.yml b/testdata/upload-download/.forgejo/workflows/test.yml
index e77982e..a9c357d 100644
--- a/testdata/upload-download/.forgejo/workflows/test.yml
+++ b/testdata/upload-download/.forgejo/workflows/test.yml
@@ -6,7 +6,7 @@ jobs:
   upload-download:
     runs-on: lxc-bookworm
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         id: release-upload
         uses: SELF@vTest