diff --git a/README.md b/README.md
index 7912cb2..06b7fd9 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,8 @@
 
 然后安装 lxml ：
 
-    command -v pip || sudo easy_install pip
-    sudo pip install lxml
+    command -v pip3 || sudo easy_install pip3
+    sudo pip3 install lxml
 
 ## 简介
 
diff --git a/cndict/oxford.py b/cndict/oxford.py
index 6c3dfa7..e2730a1 100644
--- a/cndict/oxford.py
+++ b/cndict/oxford.py
@@ -6,6 +6,7 @@
 import re
 import subprocess
 import sys
+import sysconfig
 import urllib
 import urllib.parse
 from distutils.version import StrictVersion
@@ -14,7 +15,7 @@
 
 _lxml_installed = True
 try:
-    sys.path.append('/usr/local/lib/python2.7/site-packages')
+    sys.path.append(sysconfig.get_paths()["purelib"])
     from lxml import etree
 except ImportError:
     _lxml_installed = False