diff --git a/Cargo.lock b/Cargo.lock
index 10c55f5..3296351 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -912,9 +912,22 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.7.13"
+version = "0.7.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c2bdb6314ec10835cd3293dd268473a835c02b7b352e788be788b3c6ca6bb16"
+checksum = "8067b404fe97c70829f082dec8bcf4f71225d7eaea1d8645349cb76fa06205cc"
+dependencies = [
+ "libc",
+ "log",
+ "miow",
+ "ntapi",
+ "winapi",
+]
+
+[[package]]
+name = "mio"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba272f85fa0b41fc91872be579b3bbe0f56b792aa361a380eb669469f68dafb2"
 dependencies = [
  "libc",
  "log",
@@ -976,7 +989,7 @@ dependencies = [
  "inotify",
  "kqueue",
  "libc",
- "mio",
+ "mio 0.7.14",
  "walkdir",
  "winapi",
 ]
@@ -1542,7 +1555,7 @@ dependencies = [
  "futures",
  "libc",
  "log",
- "mio",
+ "mio 0.8.0",
  "nix",
  "notify",
  "once_cell",
@@ -1618,7 +1631,7 @@ dependencies = [
  "log",
  "log4rs",
  "lru_time_cache",
- "mio",
+ "mio 0.8.0",
  "native-tls",
  "nix",
  "once_cell",
@@ -1858,7 +1871,7 @@ dependencies = [
  "bytes",
  "libc",
  "memchr",
- "mio",
+ "mio 0.7.14",
  "num_cpus",
  "once_cell",
  "parking_lot",
diff --git a/crates/shadowsocks-service/Cargo.toml b/crates/shadowsocks-service/Cargo.toml
index 485e91a..2ebea50 100644
--- a/crates/shadowsocks-service/Cargo.toml
+++ b/crates/shadowsocks-service/Cargo.toml
@@ -93,7 +93,7 @@ tokio-rustls = { version = "0.22", optional = true }
 webpki-roots = { version = "0.21", optional = true }
 rustls-native-certs = { version = "0.5", optional = true }
 async-trait = "0.1"
-mio = { version = "0.7", optional = true }
+mio = { version = "0.8", optional = true }
 
 socket2 = { version = "0.4", features = ["all"] }
 libc = "0.2"
diff --git a/crates/shadowsocks/Cargo.toml b/crates/shadowsocks/Cargo.toml
index 5792082..9718997 100644
--- a/crates/shadowsocks/Cargo.toml
+++ b/crates/shadowsocks/Cargo.toml
@@ -51,7 +51,7 @@ serde_json = "1.0"
 futures = "0.3"
 async-trait = "0.1"
 
-mio = "0.7"
+mio = "0.8"
 socket2 = { version = "0.4", features = ["all"] }
 tokio = { version = "1.9.0", features = ["io-util", "macros", "net", "parking_lot", "process", "rt", "sync", "time"] }
 tokio-io-timeout = "1.1"