diff --git a/client_https.hpp b/client_https.hpp
index 64c4d0a..ab1fc18 100644
--- a/client_https.hpp
+++ b/client_https.hpp
@@ -13,7 +13,7 @@ namespace SimpleWeb {
         Client(const std::string& server_port_path, bool verify_certificate=true, 
                 const std::string& cert_file=std::string(), const std::string& private_key_file=std::string(), 
                 const std::string& verify_file=std::string()) : 
-                ClientBase<HTTPS>::ClientBase(server_port_path, 443), context(boost::asio::ssl::context::sslv23) {
+                ClientBase<HTTPS>::ClientBase(server_port_path, 443), context(boost::asio::ssl::context::tlsv12) {
             if(verify_certificate)
                 context.set_verify_mode(boost::asio::ssl::verify_peer);
             else