diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index feadaa1..18ceeba 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -40,7 +40,7 @@ jobs:
           - os: windows-latest
             arch: x86
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/documenter.yml b/.github/workflows/documenter.yml
index f4137d1..8e35dce 100644
--- a/.github/workflows/documenter.yml
+++ b/.github/workflows/documenter.yml
@@ -11,7 +11,7 @@ jobs:
     name: Documentation
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
         with:
           version: 1.6