diff --git a/loon/loon.conf b/loon/loon.conf
index cad7ab2..3792e46 100644
--- a/loon/loon.conf
+++ b/loon/loon.conf
@@ -12,7 +12,6 @@ doh3-server = h3://1.1.1.1/dns-query,h3://8.8.8.8/dns-query
 real-ip = *.iCloud.com,*.apple.com,*.crashlytics.com,msftconnecttest.com
 sni-sniffing = true
 disable-stun = true
-disable-udp-upgrade = true
 dns-reject-mode = LoopbackIP
 domain-reject-mode = DNS
 udp-fallback-mode = REJECT