diff --git a/cmd/internal/build_libbox/main.go b/cmd/internal/build_libbox/main.go
index 700b7e48..162accb5 100644
--- a/cmd/internal/build_libbox/main.go
+++ b/cmd/internal/build_libbox/main.go
@@ -111,9 +111,9 @@ func buildiOS() {
 
 	args = append(args, "-tags")
 	if !debugEnabled {
-		args = append(args, "with_gvisor,with_utls,with_clash_api,with_conntrack")
+		args = append(args, "with_gvisor,with_utls,with_clash_api,with_low_memory,with_conntrack")
 	} else {
-		args = append(args, "with_gvisor,with_utls,with_clash_api,with_conntrack,debug")
+		args = append(args, "with_gvisor,with_utls,with_clash_api,with_low_memory,with_conntrack,debug")
 	}
 	args = append(args, "./experimental/libbox")
 
diff --git a/go.mod b/go.mod
index e111745d..b05b4417 100644
--- a/go.mod
+++ b/go.mod
@@ -25,7 +25,7 @@ require (
 	github.com/sagernet/gomobile v0.0.0-20221130124640-349ebaa752ca
 	github.com/sagernet/quic-go v0.0.0-20230202071646-a8c8afb18b32
 	github.com/sagernet/reality v0.0.0-20230312150606-35ea9af0e0b8
-	github.com/sagernet/sing v0.1.9-0.20230315063014-2731df16725b
+	github.com/sagernet/sing v0.1.9-0.20230315163130-ed73785ecc78
 	github.com/sagernet/sing-dns v0.1.4
 	github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9
 	github.com/sagernet/sing-shadowtls v0.1.0
diff --git a/go.sum b/go.sum
index 41419bda..45720c9b 100644
--- a/go.sum
+++ b/go.sum
@@ -111,8 +111,8 @@ github.com/sagernet/reality v0.0.0-20230312150606-35ea9af0e0b8 h1:4M3+0/kqvJuTsi
 github.com/sagernet/reality v0.0.0-20230312150606-35ea9af0e0b8/go.mod h1:B8lp4WkQ1PwNnrVMM6KyuFR20pU8jYBD+A4EhJovEXU=
 github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
 github.com/sagernet/sing v0.1.8/go.mod h1:jt1w2u7lJQFFSGLiRrRIs5YWmx4kAPfWuOejuDW9qMk=
-github.com/sagernet/sing v0.1.9-0.20230315063014-2731df16725b h1:1iKGftQ59+shDSx2RaLaxXJcMK/B+IU9WqUPwyBW+E0=
-github.com/sagernet/sing v0.1.9-0.20230315063014-2731df16725b/go.mod h1:9uHswk2hITw8leDbiLS/xn0t9nzBcbePxzm9PJhwdlw=
+github.com/sagernet/sing v0.1.9-0.20230315163130-ed73785ecc78 h1:SO7TITxjoKyQFBVR0MJhTji9msxEXcv5p60imPrEyY4=
+github.com/sagernet/sing v0.1.9-0.20230315163130-ed73785ecc78/go.mod h1:9uHswk2hITw8leDbiLS/xn0t9nzBcbePxzm9PJhwdlw=
 github.com/sagernet/sing-dns v0.1.4 h1:7VxgeoSCiiazDSaXXQVcvrTBxFpOePPq/4XdgnUDN+0=
 github.com/sagernet/sing-dns v0.1.4/go.mod h1:1+6pCa48B1AI78lD+/i/dLgpw4MwfnsSpZo0Ds8wzzk=
 github.com/sagernet/sing-shadowsocks v0.1.2-0.20230221080503-769c01d6bba9 h1:qS39eA4C7x+zhEkySbASrtmb6ebdy5v0y2M6mgkmSO0=