diff --git a/Docker/Dockerfile b/Docker/Dockerfile
index 6ed8e23..dddf463 100644
--- a/Docker/Dockerfile
+++ b/Docker/Dockerfile
@@ -1,5 +1,5 @@
 # Dockerfile by xianhu: build a docker image for spider or flask
-# usage: docker build -t user/centos:v12 .
+# usage: docker build -t user/centos:v14 .
 
 FROM centos:6.8
 
diff --git a/Docker/requirements.txt b/Docker/requirements.txt
index 6a4779b..1f02ad3 100644
--- a/Docker/requirements.txt
+++ b/Docker/requirements.txt
@@ -2,6 +2,7 @@ virtualenv
 pylint
 lxml
 html5lib
+xmltodict
 pybloom_live
 fake-useragent
 beautifulsoup4