Update build status badge to GitHub Actions
diff --git a/README.md b/README.md
index f1cf00f..1b1611d 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 CXX — safe FFI between Rust and C++
 =========================================
 
-[![Build Status](https://api.travis-ci.com/dtolnay/cxx.svg?branch=master)](https://travis-ci.com/dtolnay/cxx)
+[![Build Status](https://img.shields.io/github/workflow/status/dtolnay/cxx/CI/master)](https://github.com/dtolnay/cxx/actions?query=branch%3Amaster)
 [![Latest Version](https://img.shields.io/crates/v/cxx.svg)](https://crates.io/crates/cxx)
 [![Rust Documentation](https://img.shields.io/badge/api-rustdoc-blue.svg)](https://docs.rs/cxx)