diff --git a/requirements.txt b/requirements.txt
index cbfd193..71d4eae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Flask==1.0
 Flask-Excel==0.0.7
-lxml==4.2.5
+lxml==4.6.5
 pandas==0.25.2
 openpyxl==2.5.4
 pyexcel==0.5.15