diff --git a/.github/workflows/_build-packages.yml b/.github/workflows/_build-packages.yml
index f5b52b2f815a6..d19a82e38b04a 100644
--- a/.github/workflows/_build-packages.yml
+++ b/.github/workflows/_build-packages.yml
@@ -25,7 +25,7 @@ jobs:
       matrix:
         pkg-name: ${{ fromJSON(inputs.pkg-names) }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: "3.x"
diff --git a/.github/workflows/_legacy-checkpoints.yml b/.github/workflows/_legacy-checkpoints.yml
index 89534d8a9ebec..2c5a9ac67ace4 100644
--- a/.github/workflows/_legacy-checkpoints.yml
+++ b/.github/workflows/_legacy-checkpoints.yml
@@ -55,7 +55,7 @@ jobs:
     outputs:
       pl-version: ${{ steps.decide-version.outputs.pl-version }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install uv and set Python version
         uses: astral-sh/setup-uv@v7
@@ -139,7 +139,7 @@ jobs:
     env:
       PL_VERSION: ${{ needs.create-legacy-ckpts.outputs.pl-version }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: master
 
diff --git a/.github/workflows/ci-pkg-install.yml b/.github/workflows/ci-pkg-install.yml
index 945b413774331..6e58c3641c394 100644
--- a/.github/workflows/ci-pkg-install.yml
+++ b/.github/workflows/ci-pkg-install.yml
@@ -46,7 +46,7 @@ jobs:
         pkg-name: ["fabric", "pytorch", "lightning", "notset"]
         python-version: ["3.10", "3.11"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/ci-tests-fabric.yml b/.github/workflows/ci-tests-fabric.yml
index ee1d28e960b07..c9f2a87fe06e3 100644
--- a/.github/workflows/ci-tests-fabric.yml
+++ b/.github/workflows/ci-tests-fabric.yml
@@ -65,7 +65,7 @@ jobs:
       DISABLE_MPS: ${{ matrix.os == 'macOS-14' && '1' || '0' }}
       UV_TORCH_BACKEND: "cpu"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install uv and set Python version
         uses: astral-sh/setup-uv@v7
diff --git a/.github/workflows/ci-tests-pytorch.yml b/.github/workflows/ci-tests-pytorch.yml
index 21a3c331898df..a64c83a8a4b68 100644
--- a/.github/workflows/ci-tests-pytorch.yml
+++ b/.github/workflows/ci-tests-pytorch.yml
@@ -70,7 +70,7 @@ jobs:
       DISABLE_MPS: ${{ matrix.os == 'macOS-14' && '1' || '0' }}
       UV_TORCH_BACKEND: "cpu"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install uv and set Python version
         uses: astral-sh/setup-uv@v7
diff --git a/.github/workflows/cleanup-caches.yml b/.github/workflows/cleanup-caches.yml
index d9ddd90ad1cce..8117f822c2afe 100644
--- a/.github/workflows/cleanup-caches.yml
+++ b/.github/workflows/cleanup-caches.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Cleanup
         run: |
diff --git a/.github/workflows/code-checks.yml b/.github/workflows/code-checks.yml
index ebb6392a28e92..bb089bd1152e2 100644
--- a/.github/workflows/code-checks.yml
+++ b/.github/workflows/code-checks.yml
@@ -28,7 +28,7 @@ jobs:
   mypy:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install uv and set Python version
         uses: astral-sh/setup-uv@v7
diff --git a/.github/workflows/docs-build.yml b/.github/workflows/docs-build.yml
index db2e4517b79e9..bd4b901ccbb23 100644
--- a/.github/workflows/docs-build.yml
+++ b/.github/workflows/docs-build.yml
@@ -63,7 +63,7 @@ jobs:
       PIN_RELEASE_VERSIONS: 1
       ARTIFACT_DAYS: 0
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ inputs.checkout }}
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/docs-tutorials.yml b/.github/workflows/docs-tutorials.yml
index 8f2fded0b99b9..afceaccccf65b 100644
--- a/.github/workflows/docs-tutorials.yml
+++ b/.github/workflows/docs-tutorials.yml
@@ -18,7 +18,7 @@ jobs:
   docs-update:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: true
           fetch-depth: 0
diff --git a/.github/workflows/labeler-issue.yml b/.github/workflows/labeler-issue.yml
index afcd2737512a2..d4c82932ab0bf 100644
--- a/.github/workflows/labeler-issue.yml
+++ b/.github/workflows/labeler-issue.yml
@@ -19,7 +19,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Parse issue form
         uses: stefanbuck/github-issue-parser@v3
diff --git a/.github/workflows/release-nightly.yml b/.github/workflows/release-nightly.yml
index be75f9cee9b7e..98fcb8a2f28a0 100644
--- a/.github/workflows/release-nightly.yml
+++ b/.github/workflows/release-nightly.yml
@@ -23,7 +23,7 @@ jobs:
     env:
       PKG_NAME: "lightning"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: "3.10"
@@ -53,7 +53,7 @@ jobs:
     env:
       PKG_NAME: "lightning"
     steps:
-      - uses: actions/checkout@v5 # needed to use local composite action
+      - uses: actions/checkout@v6 # needed to use local composite action
       - uses: actions/download-artifact@v6
         with:
           name: nightly-packages-${{ github.sha }}
diff --git a/.github/workflows/release-pkg.yml b/.github/workflows/release-pkg.yml
index 9e0feba10efab..e70314755134a 100644
--- a/.github/workflows/release-pkg.yml
+++ b/.github/workflows/release-pkg.yml
@@ -37,7 +37,7 @@ jobs:
     needs: build-packages
     if: github.event_name == 'release'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/download-artifact@v6
         with:
           name: dist-packages-${{ github.sha }}
@@ -54,7 +54,7 @@ jobs:
     outputs:
       tag: ${{ steps.lai-package.outputs.version }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_VER }}
@@ -74,7 +74,7 @@ jobs:
       TAG: ${{ needs.release-version.outputs.tag }}
       BRANCH_NAME: "trigger/lightning-${{ needs.release-version.outputs.tag }}"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           repository: gridai/base-images
           token: ${{ secrets.PAT_GHOST }}
@@ -139,7 +139,7 @@ jobs:
       matrix:
         name: ["FABRIC", "PYTORCH", "LIGHTNING"]
     steps:
-      - uses: actions/checkout@v5 # needed for local action below
+      - uses: actions/checkout@v6 # needed for local action below
       - uses: actions/download-artifact@v6
         with:
           name: dist-packages-${{ github.sha }}
@@ -164,7 +164,7 @@ jobs:
       matrix:
         name: ["FABRIC", "PYTORCH", "LIGHTNING"]
     steps:
-      - uses: actions/checkout@v5 # needed for local action below
+      - uses: actions/checkout@v6 # needed for local action below
       - uses: actions/download-artifact@v6
         with:
           name: dist-packages-${{ github.sha }}