diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 46568c04..70900061 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: julia-actions/setup-julia@latest
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Install JuliaFormatter and format
         run: |
           julia --color=yes -e 'using Pkg; Pkg.add(PackageSpec(name="JuliaFormatter"))'
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 0eb8cad5..fc6aa7f7 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -7,7 +7,7 @@ jobs:
   aggregate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: '1.8'