diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 4cdda46..5605d13 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -29,7 +29,7 @@ jobs:
     steps:
 
       - name: Acquire sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Python
         uses: actions/setup-python@v4