diff --git a/README.md b/README.md
index 63e8481..96bf5d9 100644
--- a/README.md
+++ b/README.md
@@ -264,7 +264,7 @@ on:
       - name: Get branch names.
         id: branch-names
         uses: tj-actions/branch-names@v8
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ steps.branch-names.outputs.head_ref_branch }}
 ```