diff --git a/requirements.txt b/requirements.txt
index e89029b..efbdf19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Flask==1.0.2
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10
-lxml==4.2.5
+lxml==4.9.1
 MarkupSafe==1.1.0
 Pillow==5.3.0
 pytesseract==0.2.5