diff --git a/.github/workflows/doc-preview-cleanup.yml b/.github/workflows/doc-preview-cleanup.yml
index 17d2cd8..f0863bc 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
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 33d57f1..542d147 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -29,7 +29,7 @@ jobs:
         with:
           version: '1'
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Cache artifacts
         uses: julia-actions/cache@v2
       - name: Install dependencies
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 0f97148..db71ce0 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Cache artifacts
         uses: julia-actions/cache@v2
       - name: Install JuliaFormatter and format
diff --git a/.github/workflows/invalidations.yml b/.github/workflows/invalidations.yml
index 33c636a..ebee42f 100644
--- a/.github/workflows/invalidations.yml
+++ b/.github/workflows/invalidations.yml
@@ -23,7 +23,7 @@ jobs:
           version: '1'
       # current branch
       - name: Check out repository in current branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Cache artifacts
         uses: julia-actions/cache@v2
       - name: Build package in current branch
@@ -33,7 +33,7 @@ jobs:
         id: invs_branch
       # default branch
       - name: Check out repository in default branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.repository.default_branch }}
       - name: Build package in default branch
diff --git a/.github/workflows/spell-check.yml b/.github/workflows/spell-check.yml
index f266fb4..6488eff 100644
--- a/.github/workflows/spell-check.yml
+++ b/.github/workflows/spell-check.yml
@@ -13,6 +13,6 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'skip ci')"
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Check spelling
         uses: crate-ci/typos@master
diff --git a/.github/workflows/test-master.yml b/.github/workflows/test-master.yml
index 8ab4590..c0b6f9e 100644
--- a/.github/workflows/test-master.yml
+++ b/.github/workflows/test-master.yml
@@ -30,7 +30,7 @@ jobs:
       JULIA_PKG_SERVER: ''
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Julia
         uses: julia-actions/setup-julia@v2
         with:
diff --git a/.github/workflows/test-pull-request.yml b/.github/workflows/test-pull-request.yml
index 6bada00..98834c3 100644
--- a/.github/workflows/test-pull-request.yml
+++ b/.github/workflows/test-pull-request.yml
@@ -33,7 +33,7 @@ jobs:
       JULIA_PKG_SERVER: ''
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Julia
         uses: julia-actions/setup-julia@v2
         with: