diff --git a/README.md b/README.md
index bba9c00761c4..aa0007710e48 100644
--- a/README.md
+++ b/README.md
@@ -597,8 +597,6 @@ Example configuration:
             "remote_dns_address": "8.8.8.8",
             // OPTIONAL. Remote DNS's port, 53 by default
             "remote_dns_port": 53,
-            // OPTIONAL. DNS Client Cache (TCP & UDP sockets)
-            "client_cache_size": 5
         },
         {
             // Tun local server (feature = "local-tun")
diff --git a/crates/shadowsocks-service/src/config.rs b/crates/shadowsocks-service/src/config.rs
index 867c7eac0dbf..61ebb13f43cb 100644
--- a/crates/shadowsocks-service/src/config.rs
+++ b/crates/shadowsocks-service/src/config.rs
@@ -66,14 +66,7 @@ use serde::{Deserialize, Serialize};
 use shadowsocks::relay::socks5::Address;
 use shadowsocks::{
     config::{
-        ManagerAddr,
-        Mode,
-        ReplayAttackPolicy,
-        ServerAddr,
-        ServerConfig,
-        ServerUser,
-        ServerUserManager,
-        ServerWeight,
+        ManagerAddr, Mode, ReplayAttackPolicy, ServerAddr, ServerConfig, ServerUser, ServerUserManager, ServerWeight,
     },
     crypto::CipherKind,
     plugin::PluginConfig,
@@ -1553,11 +1546,6 @@ impl Config {
                             });
                         }
 
-                        #[cfg(feature = "local-dns")]
-                        {
-                            local_config.client_cache_size = local.client_cache_size;
-                        }
-
                         #[cfg(feature = "local-tun")]
                         if let Some(tun_interface_address) = local.tun_interface_address {
                             match tun_interface_address.parse::<IpNet>() {
@@ -2469,8 +2457,6 @@ impl fmt::Display for Config {
                                 Address::DomainNameAddress(.., port) => Some(*port),
                             },
                         },
-                        #[cfg(feature = "local-dns")]
-                        client_cache_size: local.client_cache_size.clone(),
                         #[cfg(feature = "local-tun")]
                         tun_interface_name: local.tun_interface_name.clone(),
                         #[cfg(feature = "local-tun")]
diff --git a/crates/shadowsocks-service/src/local/mod.rs b/crates/shadowsocks-service/src/local/mod.rs
index dc99074c266d..35ebe81f97d0 100644
--- a/crates/shadowsocks-service/src/local/mod.rs
+++ b/crates/shadowsocks-service/src/local/mod.rs
@@ -353,7 +353,7 @@ impl Server {
                     let mut server_builder = {
                         let local_addr = local_config.local_dns_addr.expect("missing local_dns_addr");
                         let remote_addr = local_config.remote_dns_addr.expect("missing remote_dns_addr");
-                        let client_cache_size = local_config.client_cache_size.unwrap_or_else(5);
+                        let client_cache_size = local_config.client_cache_size.unwrap_or(5);
 
                         DnsBuilder::with_context(
                             context.clone(),
diff --git a/homebrew/shadowsocks-rust.rb b/homebrew/shadowsocks-rust.rb
index c180fa334a3b..b78acf0adf99 100644
--- a/homebrew/shadowsocks-rust.rb
+++ b/homebrew/shadowsocks-rust.rb
@@ -1,8 +1,8 @@
 class ShadowsocksRust < Formula
   desc "Rust port of Shadowsocks"
   homepage "https://github.com/shadowsocks/shadowsocks-rust"
-  url "https://github.com/shadowsocks/shadowsocks-rust/archive/v1.16.1.tar.gz"
-  sha256 "da4c6256247207b2579721046292bab1a2ac62301878c73ff778c168caa8a990"
+  url "https://github.com/shadowsocks/shadowsocks-rust/archive/v1.16.2.tar.gz"
+  sha256 "04fb797d8d04b8af9c4746ab9c1d659a3575a677892c2d5d9194a4b0e210e2ab"
   license "MIT"
   head "https://github.com/shadowsocks/shadowsocks-rust.git", branch: "master"