diff --git a/whois.go b/whois.go
index 94ec2db..e49788a 100644
--- a/whois.go
+++ b/whois.go
@@ -53,6 +53,11 @@ type Client struct {
 	disableReferral bool
 }
 
+type hasTimeout struct {
+	Timeout time.Duration
+	proxy.Dialer
+}
+
 // Version returns package version
 func Version() string {
 	return "1.15.4"
@@ -91,6 +96,9 @@ func (c *Client) SetDialer(dialer proxy.Dialer) *Client {
 
 // SetTimeout set query timeout
 func (c *Client) SetTimeout(timeout time.Duration) *Client {
+	if d, ok := c.dialer.(*hasTimeout); ok {
+		d.Timeout = timeout
+	}
 	c.timeout = timeout
 	return c
 }
diff --git a/whois_test.go b/whois_test.go
index f9491cd..dae4fe3 100644
--- a/whois_test.go
+++ b/whois_test.go
@@ -71,6 +71,18 @@ func TestWhoisFail(t *testing.T) {
 	assert.NotNil(t, err)
 }
 
+func TestWhoisTimeout(t *testing.T) {
+	client := NewClient()
+	client.SetTimeout(1 * time.Millisecond)
+	_, err := client.Whois("google.com")
+	assert.NotNil(t, err)
+	assert.Contains(t, err.Error(), "timeout")
+
+	client.SetTimeout(10 * time.Second)
+	_, err = client.Whois("google.com")
+	assert.Nil(t, err)
+}
+
 func TestWhois(t *testing.T) {
 	tests := []string{
 		"com",