diff --git a/README.md b/README.md
index 07ef33fc..76ab3b01 100644
--- a/README.md
+++ b/README.md
@@ -144,7 +144,7 @@ $ go run main.go
 
 Gin use `encoding/json` as default json package but you can change to [jsoniter](https://github.com/json-iterator/go) by build from other tags.
 
-```
+```sh
 $ go build -tags=jsoniter .
 ```