diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 69de59a..e8e4d75 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -25,7 +25,7 @@ jobs:
         arch:
           - x64
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
@@ -50,7 +50,7 @@ jobs:
     name: Documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: "1"
diff --git a/.github/workflows/preview-cleanup.yml b/.github/workflows/preview-cleanup.yml
index f3d42b6..41ac294 100644
--- a/.github/workflows/preview-cleanup.yml
+++ b/.github/workflows/preview-cleanup.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           ref: gh-pages