update readme.md for version
diff --git a/README.md b/README.md
index 57a57fb..cc4a916 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@
 
 ```xml
 <properties>
-    <dubbo.version>3.0.3</dubbo.version>
+    <dubbo.version>3.0.4</dubbo.version>
 </properties>
 
 <dependencies>