diff --git a/rai/core_test/rpc.cpp b/rai/core_test/rpc.cpp
index 9f3682ff..73593abb 100644
--- a/rai/core_test/rpc.cpp
+++ b/rai/core_test/rpc.cpp
@@ -25,8 +25,8 @@ public:
 			{
 				std::stringstream ostream;
 				boost::property_tree::write_json (ostream, request);
-				req.method = "POST";
-				req.url = "/";
+				req.method ("POST");
+				req.target ("/");
 				req.version = 11;
 				ostream.flush ();
 				req.body = ostream.str ();
@@ -71,7 +71,7 @@ public:
 	boost::property_tree::ptree const & request;
 	boost::asio::ip::tcp::socket sock;
 	boost::property_tree::ptree json;
-	beast::streambuf sb;
+	beast::flat_buffer sb;
 	beast::http::request<beast::http::string_body> req;
 	beast::http::response<beast::http::string_body> resp;
 	int status;
diff --git a/rai/node/node.cpp b/rai/node/node.cpp
index 00a2cad1..3ef2cd8a 100755
--- a/rai/node/node.cpp
+++ b/rai/node/node.cpp
@@ -1110,8 +1110,8 @@ warmed_up (0)
 							if (!ec)
 							{
 								auto req (std::make_shared <beast::http::request<beast::http::string_body>> ());
-								req->method = "POST";
-								req->url = *target;
+								req->method ("POST");
+								req->target (*target);
 								req->version = 11;
 								req->fields.replace("Host", address);
 								req->body = *body;
@@ -1120,7 +1120,7 @@ warmed_up (0)
 								{
 									if (!ec)
 									{
-										auto sb (std::make_shared <beast::streambuf> ());
+										auto sb (std::make_shared <beast::flat_buffer> ());
 										auto resp (std::make_shared <beast::http::response <beast::http::string_body>> ());
 										beast::http::async_read (*sock, *sb, *resp, [node_l, sb, resp, sock, address, port] (boost::system::error_code & ec)
 										{
@@ -1830,7 +1830,7 @@ socket (service_a)
 }
 boost::asio::ip::address address;
 uint16_t port;
-beast::streambuf buffer;
+beast::flat_buffer buffer;
 beast::http::response <beast::http::string_body> response;
 boost::asio::ip::tcp::socket socket;
 };
@@ -1875,8 +1875,8 @@ void start ()
 							request_string = ostream.str ();
 						}
 						beast::http::request <beast::http::string_body> request;
-						request.method = "POST";
-						request.url = "/";
+						request.method ("POST");
+						request.target ("/");
 						request.version = 11;
 						request.body = request_string;
 						beast::http::prepare (request);
@@ -1946,8 +1946,8 @@ void stop ()
 				request_string = ostream.str ();
 			}
 			beast::http::request <beast::http::string_body> request;
-			request.method = "POST";
-			request.url = "/";
+			request.method ("POST");
+			request.target ("/");
 			request.version = 11;
 			request.body = request_string;
 			beast::http::prepare (request);
diff --git a/rai/node/rpc.cpp b/rai/node/rpc.cpp
index f72f66b8..6eaa3199 100755
--- a/rai/node/rpc.cpp
+++ b/rai/node/rpc.cpp
@@ -2042,7 +2042,7 @@ void rai::rpc_connection::parse_connection ()
 				{
 				});
 			});
-			if (this_l->request.method == "POST")
+			if (this_l->request.method () == "POST")
 			{
 				auto handler (std::make_shared <rai::rpc_handler> (*this_l->node, this_l->rpc, this_l->request.body, response_handler));
 				handler->process_request ();
diff --git a/rai/node/rpc.hpp b/rai/node/rpc.hpp
index 9a77feb9..2316a404 100644
--- a/rai/node/rpc.hpp
+++ b/rai/node/rpc.hpp
@@ -3,6 +3,7 @@
 #include <rai/utility.hpp>
 
 #include <beast/http.hpp>
+#include <beast/core/flat_buffer.hpp>
 
 #include <boost/asio.hpp>
 #include <boost/property_tree/json_parser.hpp>
@@ -62,7 +63,7 @@ public:
 	std::shared_ptr <rai::node> node;
 	rai::rpc & rpc;
 	boost::asio::ip::tcp::socket socket;
-	beast::streambuf buffer;
+	beast::flat_buffer buffer;
 	beast::http::request <beast::http::string_body> request;
 	beast::http::response <beast::http::string_body> res;
 };