diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 28cf4b2..00fad3a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -33,7 +33,7 @@ jobs:
     steps:
 
     - name: Acquire sources
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Setup Python
       uses: actions/setup-python@v4