diff --git a/README.md b/README.md
index 1f7d0ef..3e6637c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 R3
 ================
 
+[![Build Status](https://travis-ci.org/c9s/r3.svg?branch=master)](https://travis-ci.org/c9s/r3)
+
 R3 is an URL router library with high performance, thus, it's implemented in C.
 It compiles your route paths into a prefix trie.