diff --git a/requirements.txt b/requirements.txt
index 7138a18..9e0d19f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ elasticsearch==7.0.2
 fasttext==0.9.1
 jupyter==1.0.0
 lesscpy==0.13.0
-lxml==4.3.1
+lxml==4.9.1
 matplotlib==2.2.2
 nltk==3.3
 notebook==5.7.4