diff --git a/docs/migration.md b/docs/migration.md
index b6ac0d8ab7..b282a90fc7 100644
--- a/docs/migration.md
+++ b/docs/migration.md
@@ -8,6 +8,13 @@ icon: material/arrange-bring-forward
 
     This version is still under development, and the following migration guide may be changed in the future.
 
+### `domain_suffix` behavior update
+
+For historical reasons, sing-box's `domain_suffix` rule matches literal prefixes instead of the same as other projects.
+
+sing-box 1.9.0 modifies the behavior of `domain_suffix`: If the rule value is prefixed with `.`,
+the behavior is unchanged, otherwise it matches `(domain|.+\.domain)` instead.
+
 ### `process_path` format update on Windows
 
 The `process_path` rule of sing-box is inherited from Clash,
diff --git a/docs/migration.zh.md b/docs/migration.zh.md
index 9998349f13..bd63bf1767 100644
--- a/docs/migration.zh.md
+++ b/docs/migration.zh.md
@@ -8,6 +8,12 @@ icon: material/arrange-bring-forward
 
     该版本仍在开发中，迁移指南可能将在未来更改。
 
+### `domain_suffix` 行为更新
+
+由于历史原因，sing-box 的 `domain_suffix` 规则匹配字面前缀，而不与其他项目相同。
+
+sing-box 1.9.0 修改了 `domain_suffix` 的行为：如果规则值以 `.` 为前缀则行为不变，否则改为匹配 `(domain|.+\.domain)`。
+
 ### 对 Windows 上 `process_path` 格式的更新
 
 sing-box 的 `process_path` 规则继承自Clash，
diff --git a/go.mod b/go.mod
index ff474562ce..816221b31a 100644
--- a/go.mod
+++ b/go.mod
@@ -26,7 +26,7 @@ require (
 	github.com/sagernet/gvisor v0.0.0-20231209105102-8d27a30e436e
 	github.com/sagernet/quic-go v0.40.1-beta.2
 	github.com/sagernet/reality v0.0.0-20230406110435-ee17307e7691
-	github.com/sagernet/sing v0.3.0
+	github.com/sagernet/sing v0.3.1-0.20240105061852-782bc05c5573
 	github.com/sagernet/sing-dns v0.1.12
 	github.com/sagernet/sing-mux v0.2.0
 	github.com/sagernet/sing-quic v0.1.7
diff --git a/go.sum b/go.sum
index 121599a7bb..d8e4939fc8 100644
--- a/go.sum
+++ b/go.sum
@@ -109,8 +109,8 @@ github.com/sagernet/quic-go v0.40.1-beta.2/go.mod h1:CcKTpzTAISxrM4PA5M20/wYuz9T
 github.com/sagernet/reality v0.0.0-20230406110435-ee17307e7691 h1:5Th31OC6yj8byLGkEnIYp6grlXfo1QYUfiYFGjewIdc=
 github.com/sagernet/reality v0.0.0-20230406110435-ee17307e7691/go.mod h1:B8lp4WkQ1PwNnrVMM6KyuFR20pU8jYBD+A4EhJovEXU=
 github.com/sagernet/sing v0.2.18/go.mod h1:OL6k2F0vHmEzXz2KW19qQzu172FDgSbUSODylighuVo=
-github.com/sagernet/sing v0.3.0 h1:PIDVFZHnQAAYRL1UYqNM+0k5s8f/tb1lUW6UDcQiOc8=
-github.com/sagernet/sing v0.3.0/go.mod h1:9pfuAH6mZfgnz/YjP6xu5sxx882rfyjpcrTdUpd6w3g=
+github.com/sagernet/sing v0.3.1-0.20240105061852-782bc05c5573 h1:1wGN3eNanp8r+Y3bNBys3ZnAVF5gdtDoDwtosMZEbgA=
+github.com/sagernet/sing v0.3.1-0.20240105061852-782bc05c5573/go.mod h1:9pfuAH6mZfgnz/YjP6xu5sxx882rfyjpcrTdUpd6w3g=
 github.com/sagernet/sing-dns v0.1.12 h1:1HqZ+ln+Rezx/aJMStaS0d7oPeX2EobSV1NT537kyj4=
 github.com/sagernet/sing-dns v0.1.12/go.mod h1:rx/DTOisneQpCgNQ4jbFU/JNEtnz0lYcHXenlVzpjEU=
 github.com/sagernet/sing-mux v0.2.0 h1:4C+vd8HztJCWNYfufvgL49xaOoOHXty2+EAjnzN3IYo=