diff --git a/CHANGES b/CHANGES
index a58348a..5ead42c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+2.9.4 2016-10-11
+- sync client version
+
 2.6.13 2015-11-02
 - add protocol setting
 
diff --git a/db_transfer.py b/db_transfer.py
index de0a481..46fbdc6 100644
--- a/db_transfer.py
+++ b/db_transfer.py
@@ -197,6 +197,7 @@ class TransferBase(object):
 		last_rows = []
 		db_instance = obj()
 		ServerPool.get_instance()
+		shell.log_shadowsocks_version()
 		import resource
 		logging.info('current process RLIMIT_NOFILE resource: soft %d hard %d'  % resource.getrlimit(resource.RLIMIT_NOFILE))
 		try:
diff --git a/shadowsocks/server.py b/shadowsocks/server.py
index f8deeeb..7c60af9 100755
--- a/shadowsocks/server.py
+++ b/shadowsocks/server.py
@@ -37,6 +37,8 @@ def main():
 
     config = shell.get_config(False)
 
+    shell.log_shadowsocks_version()
+
     daemon.daemon_exec(config)
 
     if config['port_password']:
diff --git a/shadowsocks/shell.py b/shadowsocks/shell.py
index 44bdb63..5973513 100644
--- a/shadowsocks/shell.py
+++ b/shadowsocks/shell.py
@@ -54,13 +54,30 @@ def print_exception(e):
 
 
 def print_shadowsocks():
-    version = ''
+    version_str = ''
     try:
         import pkg_resources
-        version = pkg_resources.get_distribution('shadowsocks').version
+        version_str = pkg_resources.get_distribution('shadowsocks').version
     except Exception:
-        pass
-    print('Shadowsocks %s' % version)
+        try:
+            from shadowsocks import version
+            version_str = version.version()
+        except Exception:
+            pass
+    print('ShadowsocksR %s' % version_str)
+
+def log_shadowsocks_version():
+    version_str = ''
+    try:
+        import pkg_resources
+        version_str = pkg_resources.get_distribution('shadowsocks').version
+    except Exception:
+        try:
+            from shadowsocks import version
+            version_str = version.version()
+        except Exception:
+            pass
+    logging.info('ShadowsocksR %s' % version_str)
 
 def find_config():
     config_path = 'user-config.json'
diff --git a/version.py b/version.py
new file mode 100644
index 0000000..244b712
--- /dev/null
+++ b/version.py
@@ -0,0 +1,3 @@
+def version()
+    return '2.9.4 update 2016-10-11'
+