diff --git a/ShadowsocksX-NG/LaunchAgentUtils.swift b/ShadowsocksX-NG/LaunchAgentUtils.swift
index e5357c9..54f766c 100644
--- a/ShadowsocksX-NG/LaunchAgentUtils.swift
+++ b/ShadowsocksX-NG/LaunchAgentUtils.swift
@@ -8,7 +8,7 @@
 
 import Foundation
 
-let SS_LOCAL_VERSION = "2.4.6"
+let SS_LOCAL_VERSION = "2.5.6"
 let PRIVOXY_VERSION = "3.0.26.static"
 let APP_SUPPORT_DIR = "/Library/Application Support/ShadowsocksX-NG/"
 let LAUNCH_AGENT_DIR = "/Library/LaunchAgents/"
@@ -114,7 +114,8 @@ func InstallSSLocal() {
     let homeDir = NSHomeDirectory()
     let appSupportDir = homeDir+APP_SUPPORT_DIR
     if !fileMgr.fileExists(atPath: appSupportDir + "ss-local-\(SS_LOCAL_VERSION)/ss-local")
-    || !fileMgr.fileExists(atPath: appSupportDir + "libcrypto.1.0.0.dylib") {
+    || !fileMgr.fileExists(atPath: appSupportDir + "libcrypto.1.0.0.dylib")
+    || !fileMgr.fileExists(atPath: appSupportDir + "libpcre.1.dylib") {
         let bundle = Bundle.main
         let installerPath = bundle.path(forResource: "install_ss_local.sh", ofType: nil)
         let task = Process.launchedProcess(launchPath: installerPath!, arguments: [""])
diff --git a/ShadowsocksX-NG/install_ss_local.sh b/ShadowsocksX-NG/install_ss_local.sh
index dc9cbaa..35ba0dd 100755
--- a/ShadowsocksX-NG/install_ss_local.sh
+++ b/ShadowsocksX-NG/install_ss_local.sh
@@ -8,11 +8,14 @@
 
 
 cd `dirname "${BASH_SOURCE[0]}"`
-mkdir -p "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local-2.4.6"
-cp -f ss-local "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local-2.4.6/"
+mkdir -p "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local-2.5.6"
+cp -f ss-local "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local-2.5.6/"
 rm -f "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local"
-ln -s "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local-2.4.6/ss-local" "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local"
+ln -s "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local-2.5.6/ss-local" "$HOME/Library/Application Support/ShadowsocksX-NG/ss-local"
 
 cp -f libcrypto.1.0.0.dylib "$HOME/Library/Application Support/ShadowsocksX-NG/"
+cp -f libpcre.1.dylib "$HOME/Library/Application Support/ShadowsocksX-NG/"
+rm -f "$HOME/Library/Application Support/ShadowsocksX-NG/libpcre.dylib"
+ln -s "$HOME/Library/Application Support/ShadowsocksX-NG/libpcre.1.dylib" "$HOME/Library/Application Support/ShadowsocksX-NG/libpcre.dylib"
 
-echo done
\ No newline at end of file
+echo done
diff --git a/ShadowsocksX-NG/libpcre.1.dylib b/ShadowsocksX-NG/libpcre.1.dylib
new file mode 100644
index 0000000..eaba371
Binary files /dev/null and b/ShadowsocksX-NG/libpcre.1.dylib differ
diff --git a/ShadowsocksX-NG/ss-local b/ShadowsocksX-NG/ss-local
index c254766..5b1067a 100755
Binary files a/ShadowsocksX-NG/ss-local and b/ShadowsocksX-NG/ss-local differ