diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 8923940..6b89888 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -23,7 +23,7 @@ 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'