diff --git a/.github/workflows/default.yml b/.github/workflows/default.yml
index 7898b32..8c762ed 100644
--- a/.github/workflows/default.yml
+++ b/.github/workflows/default.yml
@@ -25,7 +25,7 @@ jobs :
     runs-on : ubuntu-latest
     steps :
     - name : checkout
-      uses : "actions/checkout@v2"
+      uses : "actions/checkout@v4"
     - name : docker build current
       run : "docker build --tag $GITHUB_REPOSITORY:$GITHUB_SHA --file ./Dockerfile ."
     - name : docker build latest