diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9b138a8..5be1a46 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout source
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Set up Python 3.8
       uses: actions/setup-python@v4.3.1
       with:
@@ -61,7 +61,7 @@ jobs:
           cibw_skip: '*-win_amd64'
     steps:
     - name: Checkout source
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Enable MSVC 64bit
       uses: ilammy/msvc-dev-cmd@v1
       if: matrix.os == 'windows-latest' && matrix.cibw_skip == '*-win32'
@@ -122,7 +122,7 @@ jobs:
 
     steps:
     - name: Checkout source
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Download wheels and sdist
       uses: actions/download-artifact@v3