diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 93562afd7..1069f373b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -151,7 +151,7 @@ jobs:
         # apt in runner, if needed, may not be up-to-date
         sudo apt-get update
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     #-------- Python 3 -----
     - name: Set up supported Python ${{ matrix.python-version }}
       id: setup-python
@@ -464,7 +464,7 @@ jobs:
     name: Linter
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v4
       with: