diff --git a/.github/workflows/base_test_workflow.yml b/.github/workflows/base_test_workflow.yml
index 066bc98a7..f4c8a0049 100644
--- a/.github/workflows/base_test_workflow.yml
+++ b/.github/workflows/base_test_workflow.yml
@@ -53,7 +53,7 @@ jobs:
     name: ${{ inputs.os }} py ${{ inputs.python_version }} ${{ inputs.napari }} ${{ inputs.qt_backend }} ${{ inputs.pydantic }}
     runs-on: ${{ inputs.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         name: Install Python ${{ inputs.python_version }}
         with:
diff --git a/.github/workflows/check_pr_title.yml b/.github/workflows/check_pr_title.yml
index 44b3120f5..cbf968b5f 100644
--- a/.github/workflows/check_pr_title.yml
+++ b/.github/workflows/check_pr_title.yml
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip check PR title') }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.ref }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index b713ef72c..8afeaefae 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -43,7 +43,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/make_release.yml b/.github/workflows/make_release.yml
index da7a62b67..50578094e 100644
--- a/.github/workflows/make_release.yml
+++ b/.github/workflows/make_release.yml
@@ -15,7 +15,7 @@ jobs:
       attestations: write
       id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: hynek/build-and-inspect-python-package@v2
@@ -31,7 +31,7 @@ jobs:
         os: ["ubuntu-22.04", "windows-2022", "macos-13", "macos-14"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
@@ -76,7 +76,7 @@ jobs:
       - build_pyinstaller_bundle
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/download-artifact@v6
         with:
           pattern: 'PartSeg_bundle_*'
diff --git a/.github/workflows/semgrep.yml b/.github/workflows/semgrep.yml
index 31cf4c8cc..e5f7d4d2b 100644
--- a/.github/workflows/semgrep.yml
+++ b/.github/workflows/semgrep.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       # Fetch project source with GitHub Actions Checkout.
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       # Run the "semgrep ci" command on the command line of the docker image.
       - run: semgrep ci
         env:
diff --git a/.github/workflows/test_napari_repo.yml b/.github/workflows/test_napari_repo.yml
index eb4796f44..2589eb332 100644
--- a/.github/workflows/test_napari_repo.yml
+++ b/.github/workflows/test_napari_repo.yml
@@ -16,7 +16,7 @@ jobs:
     name: Download test data
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - shell: bash
         run: bash build_utils/download_data.sh
       - name: Upload test data
@@ -37,7 +37,7 @@ jobs:
         python: ['3.10', '3.11', '3.12']
         napari_version: ['repo']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v6
diff --git a/.github/workflows/test_prereleases.yml b/.github/workflows/test_prereleases.yml
index b7c123b12..7d96f5a9d 100644
--- a/.github/workflows/test_prereleases.yml
+++ b/.github/workflows/test_prereleases.yml
@@ -32,7 +32,7 @@ jobs:
     name: Download test data
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - shell: bash
         run: bash build_utils/download_data.sh
       - name: Upload test data
@@ -53,7 +53,7 @@ jobs:
         platform: [windows-2022, macos-14, ubuntu-24.04]
         python: [3.12]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v6
@@ -124,7 +124,7 @@ jobs:
     name: "Test pyinstaller build"
     runs-on: "ubuntu-latest"
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       name: Install Python
       with:
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b8b4135b7..f45969410 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -25,7 +25,7 @@ jobs:
     name: Action lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Check workflow files
         run: |
           bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
@@ -36,7 +36,7 @@ jobs:
     name: Download test data
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - shell: bash
         run: bash build_utils/download_data.sh
       - name: Upload test data
@@ -156,7 +156,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [test_coverage, test_minimal]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: "3.x"
@@ -198,7 +198,7 @@ jobs:
     runs-on: ubuntu-24.04
     needs: download_data
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Miniconda
         uses: conda-incubator/setup-miniconda@v3
         with:
@@ -257,7 +257,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: hynek/build-and-inspect-python-package@v2
diff --git a/.github/workflows/upgrade-dependencies.yml b/.github/workflows/upgrade-dependencies.yml
index 198d5cd82..af13e5a7a 100644
--- a/.github/workflows/upgrade-dependencies.yml
+++ b/.github/workflows/upgrade-dependencies.yml
@@ -15,7 +15,7 @@ jobs:
       # It doesn't matter if it's deleted when merged, it'll be re-created
       BRANCH_NAME: auto-dependency-upgrades
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 #        with:
 #          # [Optional] Use a separate key to automatically execute checks on the resulting PR
 #          # https://github.com/peter-evans/create-pull-request/blob/main/docs/concepts-guidelines.md#triggering-further-workflow-runs