diff --git a/cmd/sing-box/cmd_format.go b/cmd/sing-box/cmd_format.go
index ab59c9ae5..a8ecb6ab7 100644
--- a/cmd/sing-box/cmd_format.go
+++ b/cmd/sing-box/cmd_format.go
@@ -38,10 +38,12 @@ func format() error {
 		return err
 	}
 	for _, optionsEntry := range optionsList {
+		comments := optionsEntry.options.Comments()
 		optionsEntry.options, err = badjson.Omitempty(globalCtx, optionsEntry.options)
 		if err != nil {
 			return err
 		}
+		optionsEntry.options.SetComments(comments)
 		buffer := new(bytes.Buffer)
 		encoder := json.NewEncoder(buffer)
 		encoder.SetIndent("", "  ")
diff --git a/go.mod b/go.mod
index 5693a8b72..8b6730cb3 100644
--- a/go.mod
+++ b/go.mod
@@ -37,7 +37,7 @@ require (
 	github.com/sagernet/gomobile v0.1.12
 	github.com/sagernet/gvisor v0.0.0-20250811.0-sing-box-mod.1
 	github.com/sagernet/quic-go v0.59.0-sing-box-mod.4
-	github.com/sagernet/sing v0.8.10-0.20260424005254-7b2d7ac5204c
+	github.com/sagernet/sing v0.8.10-0.20260427232324-f758c54b7409
 	github.com/sagernet/sing-cloudflared v0.1.0
 	github.com/sagernet/sing-mux v0.3.4
 	github.com/sagernet/sing-quic v0.6.2-0.20260412143638-8f65b6be7cd6
diff --git a/go.sum b/go.sum
index acc16a000..faafae016 100644
--- a/go.sum
+++ b/go.sum
@@ -242,8 +242,8 @@ github.com/sagernet/nftables v0.3.0-mod.2 h1:ck2KMU02OxL1eDFgGaWYglMDpoOZ7OHzxje
 github.com/sagernet/nftables v0.3.0-mod.2/go.mod h1:8kslHG4VvYNihcco+i6uxIX7qbT8A56T0y5q7U44ZaQ=
 github.com/sagernet/quic-go v0.59.0-sing-box-mod.4 h1:6qvrUW79S+CrPwWz6cMePXohgjHoKxLo3c+MDhNwc3o=
 github.com/sagernet/quic-go v0.59.0-sing-box-mod.4/go.mod h1:OqILvS182CyOol5zNNo6bguvOGgXzV459+chpRaUC+4=
-github.com/sagernet/sing v0.8.10-0.20260424005254-7b2d7ac5204c h1:hSVSiYyv3x0wNn38mnlOwoTwod+vW4XE251KG/uaA4U=
-github.com/sagernet/sing v0.8.10-0.20260424005254-7b2d7ac5204c/go.mod h1:ARkL0gM13/Iv5VCZmci/NuoOlePoIsW0m7BWfln/Hak=
+github.com/sagernet/sing v0.8.10-0.20260427232324-f758c54b7409 h1:TjqWXRWjiZi98SGX0Rmdl/XF7066+q3Idf+xjqJFF1U=
+github.com/sagernet/sing v0.8.10-0.20260427232324-f758c54b7409/go.mod h1:olXxWQNqRW/l2Q6JI3b2Qmz8iQnIFlOeeH8bx6JhgUA=
 github.com/sagernet/sing-cloudflared v0.1.0 h1:to+2fcCx8zu4X/DirRw9Ihc+FrEZ7oEyIqeCoJiwIpw=
 github.com/sagernet/sing-cloudflared v0.1.0/go.mod h1:bH2NKX+NpDTY1Zkxfboxw6MXB/ZywaNLmrDJYgKMJ2Y=
 github.com/sagernet/sing-mux v0.3.4 h1:ZQplKl8MNXutjzbMVtWvWG31fohhgOfCuUZR4dVQ8+s=
diff --git a/option/options.go b/option/options.go
index 1b4685bac..4e87852ac 100644
--- a/option/options.go
+++ b/option/options.go
@@ -11,6 +11,7 @@ import (
 
 type _Options struct {
 	RawMessage           json.RawMessage       `json:"-"`
+	CommentsSet          *json.CommentSet      `json:"-"`
 	Schema               string                `json:"$schema,omitempty"`
 	Log                  *LogOptions           `json:"log,omitempty"`
 	DNS                  *DNSOptions           `json:"dns,omitempty"`
@@ -28,6 +29,10 @@ type _Options struct {
 
 type Options _Options
 
+func (o Options) MarshalJSONContext(ctx context.Context) ([]byte, error) {
+	return json.MarshalContext(ctx, (_Options)(o))
+}
+
 func (o *Options) UnmarshalJSONContext(ctx context.Context, content []byte) error {
 	decoder := json.NewDecoderContext(ctx, bytes.NewReader(content))
 	decoder.DisallowUnknownFields()
@@ -39,6 +44,14 @@ func (o *Options) UnmarshalJSONContext(ctx context.Context, content []byte) erro
 	return checkOptions(o)
 }
 
+func (o Options) Comments() *json.CommentSet {
+	return o.CommentsSet
+}
+
+func (o *Options) SetComments(comments *json.CommentSet) {
+	o.CommentsSet = comments
+}
+
 type LogOptions struct {
 	Disabled     bool   `json:"disabled,omitempty"`
 	Level        string `json:"level,omitempty"`