diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index d54fa2f..dfd9841 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -18,5 +18,3 @@ jobs:
     - uses: actions/checkout@v3
     - name: Build
       run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
diff --git a/Cargo.toml b/Cargo.toml
index 736aaaa..e285f56 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sctpx"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["FanHui <hui.fan@mail.ru>"]
 edition = "2021"
 description = "A simple and friendly SCTP wrapper."
@@ -13,7 +13,7 @@ repository = "https://github.com/rust-util-collections/sctpx.git"
 [dependencies]
 nix = { version = "0.29", features = ["net"] }
 libc = "0.2"
-ruc = "6.0"
+ruc = "7.0"
 
 [features]
 default = ["client", "server"]
diff --git a/README.md b/README.md
index 8939a76..10d9c7e 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
+![GitHub top language](https://img.shields.io/github/languages/top/rust-util-collections/sctpx)
+[![Latest Version](https://img.shields.io/crates/v/sctpx.svg)](https://crates.io/crates/sctpx)
+[![Rust Documentation](https://img.shields.io/badge/api-rustdoc-blue.svg)](https://docs.rs/sctpx)
+[![Rust](https://github.com/rust-util-collections/sctpx/actions/workflows/rust.yml/badge.svg)](https://github.com/rust-util-collections/sctpx/actions/workflows/rust.yml)
+[![Minimum rustc version](https://img.shields.io/badge/rustc-1.81+-lightgray.svg)](https://github.com/rust-random/rand#rust-version-requirements)
+
 # SCTPx
 
 **A friendly rust-library for coding with `SCTP` protocol.**
diff --git a/rustfmt.toml b/rustfmt.toml
index d3bf8c8..038034f 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1,4 +1 @@
-max_width = 79
-version = "Two"
-comment_width = 79
-# error_on_line_overflow = true
+max_width = 89
diff --git a/src/client.rs b/src/client.rs
index 67b647d..99c553f 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -39,11 +39,7 @@ impl Hdr {
 
     /// sendmsg to server
     #[inline(always)]
-    pub fn sendto_straddr(
-        &self,
-        data: &[u8],
-        server_addr: &str,
-    ) -> Result<usize> {
+    pub fn sendto_straddr(&self, data: &[u8], server_addr: &str) -> Result<usize> {
         server_addr
             .parse::<SocketAddr>()
             .c(d!())
@@ -52,11 +48,7 @@ impl Hdr {
 
     /// sendmsg to server
     #[inline(always)]
-    pub fn sendto(
-        &self,
-        data: &[u8],
-        server_addr: SocketAddr,
-    ) -> Result<usize> {
+    pub fn sendto(&self, data: &[u8], server_addr: SocketAddr) -> Result<usize> {
         sendto(
             self.fd.as_raw_fd(),
             data,
@@ -68,10 +60,7 @@ impl Hdr {
 
     /// recvmsg from server
     #[inline(always)]
-    pub fn recvfrom(
-        &self,
-        data: &mut [u8],
-    ) -> Result<(usize, Option<SockaddrStorage>)> {
+    pub fn recvfrom(&self, data: &mut [u8]) -> Result<(usize, Option<SockaddrStorage>)> {
         recvfrom(self.fd.as_raw_fd(), data).c(d!())
     }
 }
diff --git a/src/server.rs b/src/server.rs
index ac94695..244c53c 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -6,8 +6,8 @@
 
 use nix::{
     sys::socket::{
-        bind, listen, recvfrom, sendto, setsockopt, socket, sockopt,
-        AddressFamily, Backlog, MsgFlags, SockFlag, SockType, SockaddrStorage,
+        bind, listen, recvfrom, sendto, setsockopt, socket, sockopt, AddressFamily,
+        Backlog, MsgFlags, SockFlag, SockType, SockaddrStorage,
     },
     unistd::close,
 };
@@ -41,16 +41,12 @@ impl Hdr {
     /// 回调函数可以按需向对端回复消息
     #[inline(always)]
     pub fn sendto(&self, data: &[u8], peeraddr: &PeerAddr) -> Result<usize> {
-        sendto(self.fd.as_raw_fd(), data, &peeraddr.addr, MsgFlags::empty())
-            .c(d!())
+        sendto(self.fd.as_raw_fd(), data, &peeraddr.addr, MsgFlags::empty()).c(d!())
     }
 
     // 接收消息端口必须私有
     #[inline(always)]
-    fn recvfrom(
-        &self,
-        data: &mut [u8],
-    ) -> Result<(usize, Option<SockaddrStorage>)> {
+    fn recvfrom(&self, data: &mut [u8]) -> Result<(usize, Option<SockaddrStorage>)> {
         recvfrom(self.fd.as_raw_fd(), data).c(d!())
     }
 }
@@ -92,11 +88,7 @@ pub fn start_server(
     let mut buf = vec![0; siz].into_boxed_slice();
     loop {
         if let Ok((size, Some(peer))) = info!(hdr.recvfrom(&mut buf)) {
-            info_omit!(cb(
-                &buf[0..size],
-                Arc::clone(&hdr),
-                PeerAddr::new(peer)
-            ));
+            info_omit!(cb(&buf[0..size], Arc::clone(&hdr), PeerAddr::new(peer)));
         }
     }
 }
@@ -105,8 +97,7 @@ pub fn start_server(
 // -@recv_bs: max size of system-buffer for sctp recv-queue
 // -@keep_alive: enable this will get the effect like TCP-keepalive
 fn gen_hdr(addr: &str, recv_bs: usize, keep_alive: bool) -> Result<Arc<Hdr>> {
-    let recv_bs =
-        alt!(recv_bs > RECV_BUF_SIZE_LIMIT, RECV_BUF_SIZE_LIMIT, recv_bs);
+    let recv_bs = alt!(recv_bs > RECV_BUF_SIZE_LIMIT, RECV_BUF_SIZE_LIMIT, recv_bs);
 
     let fd = socket(
         AddressFamily::Inet,
diff --git a/tools/fmt.sh b/tools/fmt.sh
index 93a3a7d..d2eb723 100755
--- a/tools/fmt.sh
+++ b/tools/fmt.sh
@@ -47,4 +47,4 @@ for file in $(find .. -type f \
     perl -p -i -e 's/ +$//g' $file
 done
 
-~/.cargo/bin/cargo +nightly fmt
+cargo fmt