diff --git a/requirements.txt b/requirements.txt
index a3b5c44..12d837a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@ openpyxl==2.5.12
 Pillow==9.0.1
 numpy==1.15.3
 python-barcode==0.9.0
-lxml==4.6.5
+lxml==4.9.1
 python-docx==0.8.7