diff --git a/.github/workflows/ci-test.yml b/.github/workflows/ci-test.yml
index d584d99..919c7e2 100644
--- a/.github/workflows/ci-test.yml
+++ b/.github/workflows/ci-test.yml
@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 474c21a..789f67c 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -12,7 +12,7 @@ jobs:
         concurrency:
             group: ${{ github.workflow }}-${{ github.ref }}
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
 
             - name: Set up Python
               uses: actions/setup-python@v4