diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9a9bcb9..a1304b3 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -38,7 +38,7 @@ jobs:
     steps:
 
     - name: Acquire sources
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up Python
       uses: actions/setup-python@v4