diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aae738c..b325cf0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
             os: ubuntu-latest
             arch: x64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
diff --git a/.github/workflows/format_check.yml b/.github/workflows/format_check.yml
index a06f31a..28b4afa 100644
--- a/.github/workflows/format_check.yml
+++ b/.github/workflows/format_check.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Format check
         shell: julia --color=yes {0}
         run: |