diff --git a/.github/workflows/FormatCheck.yml b/.github/workflows/FormatCheck.yml
index 4fa2155..2e2846e 100644
--- a/.github/workflows/FormatCheck.yml
+++ b/.github/workflows/FormatCheck.yml
@@ -29,7 +29,7 @@ jobs:
     strategy:
         fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: "1"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d8a38fa..24a9b32 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
         os: [ubuntu-latest] # macos-10.15, windows-2019, macOS-14
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Julia Setup
         uses: julia-actions/setup-julia@v2
         with:
diff --git a/.github/workflows/documenter.yml b/.github/workflows/documenter.yml
index 258d133..cfd347b 100644
--- a/.github/workflows/documenter.yml
+++ b/.github/workflows/documenter.yml
@@ -14,7 +14,7 @@ jobs:
     name: Documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Cache
         uses: julia-actions/cache@v2
         with:
diff --git a/.github/workflows/spellcheck.yml b/.github/workflows/spellcheck.yml
index 7ebc1ff..c0b55cb 100644
--- a/.github/workflows/spellcheck.yml
+++ b/.github/workflows/spellcheck.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Actions Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Check spelling
         uses: crate-ci/typos@master
         # don't fail on typos in files not impacted by this PR