diff --git a/client.go b/client.go
index ed9c4d4..f941bc3 100644
--- a/client.go
+++ b/client.go
@@ -198,8 +198,14 @@ func NewClient(options ...ClientOption) *Client {
 	if client.httpClient == nil {
 		client.httpClient = &http.Client{Transport: &http.Transport{
 			DialContext: (&net.Dialer{
-				Timeout: 30 * time.Second,
+				Timeout:   30 * time.Second,
+				KeepAlive: 30 * time.Second,
 			}).DialContext,
+			ForceAttemptHTTP2:     true,
+			MaxIdleConns:          100,
+			IdleConnTimeout:       90 * time.Second,
+			TLSHandshakeTimeout:   10 * time.Second,
+			ExpectContinueTimeout: 1 * time.Second,
 			TLSClientConfig: &tls.Config{
 				InsecureSkipVerify: client.insecure,
 			},