diff --git a/README.md b/README.md
index 7f27339..f89ffc6 100644
--- a/README.md
+++ b/README.md
@@ -21,5 +21,5 @@ or
 
 ```yaml
     - name: mkdocs build
-      uses: 'mikaelhg/mkdocs-material-plantuml@v1'
+      uses: 'mikaelhg/mkdocs-material-plantuml@v4'
 ```