diff --git a/README.md b/README.md
index cd8c524..adf99a7 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,2 @@
-# micro-codec-json
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+# micro-codec-json
+![Coverage](https://img.shields.io/badge/Coverage-47.5%25-yellow)
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