diff --git a/README.md b/README.md
index 564d4bd..4cbfd6c 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # HTTP Client
+![Coverage](https://img.shields.io/badge/Coverage-22.6%25-red)
 
 This plugin is a http client for micro.