diff --git a/main.go b/main.go
index f0dd1eb..a403e93 100644
--- a/main.go
+++ b/main.go
@@ -643,13 +643,10 @@ type roundTripperWrapper struct {
 	clientCert string
 	clientKey  string
 	insecure   bool
-	rwLocker   sync.RWMutex
-	transport  http.RoundTripper
+	transport  atomic.Pointer[http.Transport]
 }
 
 func (rtw *roundTripperWrapper) renew() {
-	rtw.rwLocker.Lock()
-	defer rtw.rwLocker.Unlock()
 	dnsCache.Refresh()
 	tr := &http.Transport{
 		Proxy:                 http.ProxyFromEnvironment,
@@ -683,13 +680,11 @@ func (rtw *roundTripperWrapper) renew() {
 			ClientSessionCache:       tls.NewLRUClientSessionCache(tlsClientSessionCacheSize),
 		}
 	}
-	rtw.transport = tr
+	rtw.transport.Store(tr)
 }
 
 func (rtw *roundTripperWrapper) RoundTrip(req *http.Request) (*http.Response, error) {
-	rtw.rwLocker.RLock()
-	defer rtw.rwLocker.RUnlock()
-	return rtw.transport.RoundTrip(req)
+	return rtw.transport.Load().RoundTrip(req)
 }
 
 func clientTransport(ctx *cli.Context, enableTLS bool) http.RoundTripper {