diff --git a/.github/workflows/DocNav.yml b/.github/workflows/DocNav.yml
index 5eca46dd8..f5df0ba0a 100644
--- a/.github/workflows/DocNav.yml
+++ b/.github/workflows/DocNav.yml
@@ -13,7 +13,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout gh-pages
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: gh-pages
           fetch-depth: 0
diff --git a/.github/workflows/benchmark-comment.yml b/.github/workflows/benchmark-comment.yml
index 611ff18f4..afc9326a1 100644
--- a/.github/workflows/benchmark-comment.yml
+++ b/.github/workflows/benchmark-comment.yml
@@ -24,7 +24,7 @@ jobs:
       ${{ github.event.workflow_run.event == 'pull_request' &&
           github.event.workflow_run.conclusion == 'success' }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       # restore records from the artifacts
       - uses: dawidd6/action-download-artifact@v11
         with:
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 712a9aa41..c9135b29e 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -16,7 +16,7 @@ jobs:
     if: contains(github.event.pull_request.labels.*.name, 'performance critical')
     steps:
       # setup
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: '1.7'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b67f195bd..d71e2299f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
           - 'MultiOutput'
           - 'Others'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/doc_preview_cleanup.yml b/.github/workflows/doc_preview_cleanup.yml
index 7eb81a944..ea8f71ab0 100644
--- a/.github/workflows/doc_preview_cleanup.yml
+++ b/.github/workflows/doc_preview_cleanup.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 00b3383b8..da09b4140 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -17,7 +17,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index f29f0b863..4ac308b3a 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -13,7 +13,7 @@ jobs:
   format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: 1