diff --git a/requirements.txt b/requirements.txt
index 402dc8e..b593655 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-lxml==4.3.0.0
+lxml==4.6.3
 numpy==1.17.3
 scikit-learn==0.20.1
 pandas==0.24.2