diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 6e0ab09..ecf7a8f 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -10,7 +10,7 @@ jobs:
   build-day-X-generator:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         name: checkout
       - name: source-version
         id: source-version