diff --git a/requirements.txt b/requirements.txt
index 48b75e8..5b1964c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 gensim==0.13.1
-lxml==3.6.4
+lxml==4.9.1
 nltk==3.2.1
 numpy==1.14.5
 PyICU==1.9.3