diff --git a/infra/conf/vless.go b/infra/conf/vless.go
index 88ff1c1b..22e5645f 100644
--- a/infra/conf/vless.go
+++ b/infra/conf/vless.go
@@ -11,6 +11,7 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/common/uuid"
 	"github.com/xtls/xray-core/proxy/vless"
 	"github.com/xtls/xray-core/proxy/vless/inbound"
 	"github.com/xtls/xray-core/proxy/vless/outbound"
@@ -45,6 +46,12 @@ func (c *VLessInboundConfig) Build() (proto.Message, error) {
 			return nil, newError(`VLESS clients: invalid user`).Base(err)
 		}
 
+		u, err := uuid.ParseString(account.Id)
+		if err != nil {
+			return nil, err
+		}
+		account.Id = u.String()
+
 		switch account.Flow {
 		case "", "xtls-rprx-origin", "xtls-rprx-direct":
 		case "xtls-rprx-splice":
@@ -167,6 +174,12 @@ func (c *VLessOutboundConfig) Build() (proto.Message, error) {
 				return nil, newError(`VLESS users: invalid user`).Base(err)
 			}
 
+			u, err := uuid.ParseString(account.Id)
+			if err != nil {
+				return nil, err
+			}
+			account.Id = u.String()
+
 			switch account.Flow {
 			case "", "xtls-rprx-origin", "xtls-rprx-origin-udp443", "xtls-rprx-direct", "xtls-rprx-direct-udp443":
 			case "xtls-rprx-splice", "xtls-rprx-splice-udp443":
diff --git a/infra/conf/vmess.go b/infra/conf/vmess.go
index 56639f1a..a5cac2bf 100644
--- a/infra/conf/vmess.go
+++ b/infra/conf/vmess.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/common/uuid"
 	"github.com/xtls/xray-core/proxy/vmess"
 	"github.com/xtls/xray-core/proxy/vmess/inbound"
 	"github.com/xtls/xray-core/proxy/vmess/outbound"
@@ -105,6 +106,13 @@ func (c *VMessInboundConfig) Build() (proto.Message, error) {
 		if err := json.Unmarshal(rawData, account); err != nil {
 			return nil, newError("invalid VMess user").Base(err)
 		}
+
+		u, err := uuid.ParseString(account.ID)
+		if err != nil {
+			return nil, err
+		}
+		account.ID = u.String()
+
 		user.Account = serial.ToTypedMessage(account.Build())
 		config.User[idx] = user
 	}
@@ -149,6 +157,13 @@ func (c *VMessOutboundConfig) Build() (proto.Message, error) {
 			if err := json.Unmarshal(rawUser, account); err != nil {
 				return nil, newError("invalid VMess user").Base(err)
 			}
+
+			u, err := uuid.ParseString(account.ID)
+			if err != nil {
+				return nil, err
+			}
+			account.ID = u.String()
+
 			user.Account = serial.ToTypedMessage(account.Build())
 			spec.User = append(spec.User, user)
 		}