diff --git a/requirements.txt b/requirements.txt
index 259d6c3..f7d2178 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 PyMySQL==0.9.2
-lxml==4.2.4
+lxml==4.9.1
 Flask==1.1.1
 numpy==1.15.0
 pyecharts==0.5.9