diff --git a/.github/workflows/Documentation.yml b/.github/workflows/Documentation.yml
index ccf3bde..5731a5c 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -17,7 +17,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: '1'
diff --git a/.github/workflows/FormatCheck.yml b/.github/workflows/FormatCheck.yml
index 5f22406..bc1402b 100644
--- a/.github/workflows/FormatCheck.yml
+++ b/.github/workflows/FormatCheck.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: julia-actions/setup-julia@v1
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install JuliaFormatter and format
         run: |
           julia  -e 'using Pkg; Pkg.add(PackageSpec(name="JuliaFormatter"))'
diff --git a/.github/workflows/Test.yml b/.github/workflows/Test.yml
index a36a9b7..b5eac66 100644
--- a/.github/workflows/Test.yml
+++ b/.github/workflows/Test.yml
@@ -25,7 +25,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}