diff --git a/README.md b/README.md
index e5ae8bbb..c2fdc0f6 100644
--- a/README.md
+++ b/README.md
@@ -186,6 +186,7 @@ Example HTTP program:
 ```C++
 #include <beast/http.hpp>
 #include <boost/asio.hpp>
+#include <boost/lexical_cast.hpp>
 #include <iostream>
 #include <string>
 
@@ -200,18 +201,19 @@ int main()
         r.resolve(boost::asio::ip::tcp::resolver::query{host, "http"}));
 
     // Send HTTP request using beast
-    beast::http::request_v1<beast::http::empty_body> req;
+    beast::http::request<beast::http::empty_body> req;
     req.method = "GET";
     req.url = "/";
     req.version = 11;
-    req.headers.replace("Host", host + ":" + std::to_string(sock.remote_endpoint().port()));
-    req.headers.replace("User-Agent", "Beast");
+    req.fields.replace("Host", host + ":" +
+        boost::lexical_cast<std::string>(sock.remote_endpoint().port()));
+    req.fields.replace("User-Agent", "Beast");
     beast::http::prepare(req);
     beast::http::write(sock, req);
 
     // Receive and print HTTP response using beast
     beast::streambuf sb;
-    beast::http::response_v1<beast::http::streambuf_body> resp;
+    beast::http::response<beast::http::streambuf_body> resp;
     beast::http::read(sock, sb, resp);
     std::cout << resp;
 }