diff --git a/.github/workflows/build-msrv.yml b/.github/workflows/build-msrv.yml
index 10cf05c9..48b3499c 100644
--- a/.github/workflows/build-msrv.yml
+++ b/.github/workflows/build-msrv.yml
@@ -30,9 +30,9 @@ jobs:
       - name: Install Rust
         run: |
           rustup set profile minimal
-          rustup toolchain install 1.88
-          rustup default 1.88
-          rustup override set 1.88
+          rustup toolchain install 1.91
+          rustup default 1.91
+          rustup override set 1.91
       - name: Build with All Features Enabled (Unix)
         if: ${{ runner.os == 'Linux' || runner.os == 'macOS' }}
         run: cargo build --verbose --features "full-extra local-flow-stat utility-url-outline"
@@ -63,9 +63,9 @@ jobs:
       - name: Install Rust
         run: |
           rustup set profile minimal
-          rustup toolchain install 1.88
-          rustup default 1.88
-          rustup override set 1.88
+          rustup toolchain install 1.91
+          rustup default 1.91
+          rustup override set 1.91
       - name: Build with All Features Enabled
         run: cargo build --manifest-path crates/shadowsocks-service/Cargo.toml --verbose --features "full dns-over-tls dns-over-https dns-over-h3 local-dns local-flow-stat local-http-rustls local-tun local-fake-dns local-online-config stream-cipher aead-cipher-extra aead-cipher-2022 aead-cipher-2022-extra security-replay-attack-detect"
 
@@ -92,8 +92,8 @@ jobs:
       - name: Install Rust
         run: |
           rustup set profile minimal
-          rustup toolchain install 1.88
-          rustup default 1.88
-          rustup override set 1.88
+          rustup toolchain install 1.91
+          rustup default 1.91
+          rustup override set 1.91
       - name: Build with All Features Enabled
         run: cargo build --manifest-path crates/shadowsocks/Cargo.toml --verbose --features "stream-cipher aead-cipher-extra aead-cipher-2022 aead-cipher-2022-extra security-replay-attack-detect"
diff --git a/Cargo.lock b/Cargo.lock
index 86bec771..c2fd7809 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -164,7 +164,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -175,7 +175,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -248,9 +248,9 @@ checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
 [[package]]
 name = "aws-lc-rs"
-version = "1.15.2"
+version = "1.16.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a88aab2464f1f25453baa7a07c84c5b7684e274054ba06817f382357f77a288"
+checksum = "a054912289d18629dc78375ba2c3726a3afe3ff71b4edba9dedfca0e3446d1fc"
 dependencies = [
  "aws-lc-sys",
  "zeroize",
@@ -258,9 +258,9 @@ dependencies = [
 
 [[package]]
 name = "aws-lc-sys"
-version = "0.35.0"
+version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b45afffdee1e7c9126814751f88dddc747f41d91da16c9551a0f1e8a11e788a1"
+checksum = "1fa7e52a4c5c547c741610a2c6f123f3881e409b714cd27e6798ef020c514f0a"
 dependencies = [
  "cc",
  "cmake",
@@ -907,7 +907,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1020,7 +1020,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1370,9 +1370,9 @@ checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
 
 [[package]]
 name = "heapless"
-version = "0.8.0"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
+checksum = "2af2455f757db2b292a9b1768c4b70186d443bcb3b316252d6b540aec1cd89ed"
 dependencies = [
  "hash32",
  "stable_deref_trait",
@@ -1578,7 +1578,7 @@ dependencies = [
  "libc",
  "percent-encoding",
  "pin-project-lite",
- "socket2 0.5.10",
+ "socket2 0.6.3",
  "system-configuration",
  "tokio",
  "tower-service",
@@ -2270,7 +2270,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2611,7 +2611,7 @@ dependencies = [
  "quinn-udp",
  "rustc-hash",
  "rustls",
- "socket2 0.5.10",
+ "socket2 0.6.3",
  "thiserror 2.0.18",
  "tokio",
  "tracing",
@@ -2649,9 +2649,9 @@ dependencies = [
  "cfg_aliases",
  "libc",
  "once_cell",
- "socket2 0.5.10",
+ "socket2 0.6.3",
  "tracing",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -2928,7 +2928,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2987,7 +2987,7 @@ dependencies = [
  "security-framework 3.5.1",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -3439,9 +3439,9 @@ checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
 
 [[package]]
 name = "smoltcp"
-version = "0.12.0"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dad095989c1533c1c266d9b1e8d70a1329dd3723c3edac6d03bbd67e7bf6f4bb"
+checksum = "ac729b0a77bd092a3f06ddaddc59fe0d67f48ba0de45a9abe707c2842c7f8767"
 dependencies = [
  "bitflags 1.3.2",
  "byteorder",
@@ -3487,7 +3487,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a766e1110788c36f4fa1c2b71b387a7815aa65f88ce0229841826633d93723e"
 dependencies = [
  "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -3633,7 +3633,7 @@ dependencies = [
  "getrandom 0.3.4",
  "once_cell",
  "rustix",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -4334,7 +4334,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.48.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index a263bf72..2d8bb4e8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ documentation = "https://docs.rs/shadowsocks-rust"
 keywords = ["shadowsocks", "proxy", "socks", "socks5", "firewall"]
 license = "MIT"
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.91"
 
 [badges]
 maintenance = { status = "passively-maintained" }
diff --git a/clippy.toml b/clippy.toml
index f3322b5f..df8fb6c6 100644
--- a/clippy.toml
+++ b/clippy.toml
@@ -1 +1 @@
-msrv = "1.88"
+msrv = "1.91"
diff --git a/crates/shadowsocks-service/Cargo.toml b/crates/shadowsocks-service/Cargo.toml
index 81f204be..c793ad3d 100644
--- a/crates/shadowsocks-service/Cargo.toml
+++ b/crates/shadowsocks-service/Cargo.toml
@@ -9,7 +9,7 @@ documentation = "https://docs.rs/shadowsocks-service"
 keywords = ["shadowsocks", "proxy", "socks", "socks5", "firewall"]
 license = "MIT"
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.91"
 
 [badges]
 maintenance = { status = "passively-maintained" }
@@ -182,7 +182,7 @@ zstd = { version = "0.13", optional = true }
 base64 = { version = "0.22", optional = true }
 
 etherparse = { version = "0.19", optional = true }
-smoltcp = { version = "0.12", optional = true, default-features = false, features = [
+smoltcp = { version = "0.13", optional = true, default-features = false, features = [
     "std",
     "log",
     "medium-ip",
diff --git a/crates/shadowsocks/Cargo.toml b/crates/shadowsocks/Cargo.toml
index ed5792d9..8f335b0d 100644
--- a/crates/shadowsocks/Cargo.toml
+++ b/crates/shadowsocks/Cargo.toml
@@ -9,7 +9,7 @@ documentation = "https://docs.rs/shadowsocks-core"
 keywords = ["shadowsocks", "proxy", "socks", "socks5", "firewall"]
 license = "MIT"
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.91"
 
 [badges]
 maintenance = { status = "passively-maintained" }