diff --git a/shadowsocks.sh b/shadowsocks.sh
index 6fc52cb..4b20e84 100644
--- a/shadowsocks.sh
+++ b/shadowsocks.sh
@@ -28,7 +28,7 @@ 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-2.26.0'
+mbedtls_file='mbedtls-2.27.0'
 mbedtls_url='https://github.com/ARMmbed/mbedtls/archive/'"$mbedtls_file"'.tar.gz'
 
 shadowsocks_libev_init="/etc/init.d/shadowsocks-libev"