diff --git a/README.md b/README.md
index 5627de5..0da5e67 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,8 @@ jobs:
       tag: v1.0.0
       username: my-docker-username
       password: ${{ secrets.DOCKER_PASSWORD }}
+      build-args: |
+        PHP_VERSION=8.4
 ```
 
 ### Input Parameters