diff --git a/internal/backend/http_transport.go b/internal/backend/http_transport.go
index 30d25ba78..1d6ee17c6 100644
--- a/internal/backend/http_transport.go
+++ b/internal/backend/http_transport.go
@@ -70,6 +70,7 @@ func Transport(opts TransportOptions) (http.RoundTripper, error) {
 			KeepAlive: 30 * time.Second,
 			DualStack: true,
 		}).DialContext,
+		ForceAttemptHTTP2:     true,
 		MaxIdleConns:          100,
 		MaxIdleConnsPerHost:   100,
 		IdleConnTimeout:       90 * time.Second,