diff --git a/requirements.txt b/requirements.txt
index d454d13..2d3a38f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ jieba==0.39
 jieba3k==0.35.1
 jws==0.1.3
 langdetect==1.0.7
-lxml==4.1.1
+lxml==4.9.1
 newspaper3k==0.2.6
 nltk==3.2.5
 numpy==1.14.1