diff --git a/README.md b/README.md
index 32202ec..a192d77 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ e.g.
 
     - run: git config --global core.autocrlf input
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - uses: cygwin/cygwin-install-action@master