diff --git a/requirements.txt b/requirements.txt
index 55e92e0..6a0b6f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 networkx==1.11
 nltk==3.4.5
 chardet==2.2.1
-lxml==4.6.3
+lxml==4.9.1
 cssselect==0.9.1