diff --git a/Cargo.lock b/Cargo.lock
index 01598ca0..1acf5cfd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 [root]
 name = "shadowsocks-rust"
-version = "1.6.4"
+version = "1.6.5"
 dependencies = [
  "base64 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byte_string 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 74685928..0f594d20 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "shadowsocks-rust"
-version = "1.6.4"
+version = "1.6.5"
 authors = ["Y. T. CHUNG <zonyitoo@gmail.com>"]
 description = "shadowsocks is a fast tunnel proxy that helps you bypass firewalls."
 repository = "https://github.com/zonyitoo/shadowsocks-rust"
diff --git a/README.md b/README.md
index 8b097fd8..2f0dec4c 100644
--- a/README.md
+++ b/README.md
@@ -114,7 +114,7 @@ List all available arguments with `-h`.
 * `chacha20`, `salsa20`, `chacha20-ietf`
 * `dummy` (No encryption, just for debugging)
 * `aes-128-gcm`, `aes-192-gcm`, `aes-256-gcm`
-* `chacha20-poly1305`
+* `chacha20-ietf-poly1305`
 
 ## Useful Tools
 
diff --git a/src/crypto/cipher.rs b/src/crypto/cipher.rs
index ba5d2350..f0e783ba 100644
--- a/src/crypto/cipher.rs
+++ b/src/crypto/cipher.rs
@@ -92,7 +92,7 @@ const CIPHER_DUMMY: &'static str = "dummy";
 
 const CIPHER_AES_128_GCM: &'static str = "aes-128-gcm";
 const CIPHER_AES_256_GCM: &'static str = "aes-256-gcm";
-const CIPHER_CHACHA20_POLY1305: &'static str = "chacha20-poly1305";
+const CIPHER_CHACHA20_POLY1305: &'static str = "chacha20-ietf-poly1305";
 
 /// ShadowSocks cipher type
 #[derive(Clone, Debug, Copy)]