diff --git a/shadowsocks-all.sh b/shadowsocks-all.sh
index 54d1aab..0c4aec8 100644
--- a/shadowsocks-all.sh
+++ b/shadowsocks-all.sh
@@ -43,8 +43,8 @@ software=(Shadowsocks-libev ShadowsocksR)
 libsodium_file="libsodium-1.0.18"
 libsodium_url="https://github.com/jedisct1/libsodium/releases/download/1.0.18-RELEASE/libsodium-1.0.18.tar.gz"
 
-mbedtls_file="mbedtls-2.16.3"
-mbedtls_url="https://tls.mbed.org/download/mbedtls-2.16.3-gpl.tgz"
+mbedtls_file="mbedtls-2.16.5"
+mbedtls_url="https://tls.mbed.org/download/mbedtls-2.16.5-gpl.tgz"
 
 shadowsocks_libev_init="/etc/init.d/shadowsocks-libev"
 shadowsocks_libev_config="/etc/shadowsocks-libev/config.json"