diff --git a/pkg/http/client.go b/pkg/http/client.go
index 699b99d..dbefbc0 100644
--- a/pkg/http/client.go
+++ b/pkg/http/client.go
@@ -38,35 +38,34 @@ func (r *HTTPClient) Do(req *http.Request) (*http.Response, error) {
 
 	if r.config.ShouldForceIPv6() {
 		dialer := &net.Dialer{}
-		transport := &http.Transport{
-			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-				host, port, err := net.SplitHostPort(addr)
+		transport := r.Client.Transport.(*http.Transport).Clone()
+		transport.DialContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
+			host, port, err := net.SplitHostPort(addr)
+			if err != nil {
+				return nil, err
+			}
+			if ipv6, ok := r.IPv6.Get(host); !ok {
+				// Lookup IP address if not found in map
+				ips, err := net.LookupIP(host)
 				if err != nil {
 					return nil, err
 				}
-				if ipv6, ok := r.IPv6.Get(host); !ok {
-					// Lookup IP address if not found in map
-					ips, err := net.LookupIP(host)
-					if err != nil {
-						return nil, err
+				for _, ip := range ips {
+					if ip.To4() == nil { // IPv6
+						ipv6 = ip
+						r.IPv6.Set(host, ipv6)
+						break
 					}
-					for _, ip := range ips {
-						if ip.To4() == nil { // IPv6
-							ipv6 = ip
-							r.IPv6.Set(host, ipv6)
-							break
-						}
-					}
-					if ipv6 == nil { // No IPv6 address found, fallback to default
-						addr = net.JoinHostPort(host, port)
-					} else {
-						addr = net.JoinHostPort(ipv6.String(), port)
-					}
-				} else if ipv6 != nil && host == req.URL.Hostname() {
+				}
+				if ipv6 == nil { // No IPv6 address found, fallback to default
+					addr = net.JoinHostPort(host, port)
+				} else {
 					addr = net.JoinHostPort(ipv6.String(), port)
 				}
-				return dialer.DialContext(ctx, network, addr)
-			},
+			} else if ipv6 != nil && host == req.URL.Hostname() {
+				addr = net.JoinHostPort(ipv6.String(), port)
+			}
+			return dialer.DialContext(ctx, network, addr)
 		}
 		r.Client.Transport = transport
 	}