diff --git a/requirements.txt b/requirements.txt
index 6d4cc9e..f7e7bbe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 bs4 == 0.0.1
-lxml == 4.1.0
+lxml == 4.9.1
 nltk == 3.2.4
 tqdm == 4.23.0
 numpy == 1.14.3