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--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 rfc6979
 =======
 
+[![Build Status](https://travis-ci.org/codahale/rfc6979.png?branch=master)](https://travis-ci.org/codahale/rfc6979)
+
 A Go implementation of [RFC 6979](https://tools.ietf.org/html/rfc6979)'s
 deterministic DSA/ECDSA signature scheme.