diff --git a/requirements.txt b/requirements.txt
index fead333..212c67b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 docx-mailmerge==0.5.0
-lxml==4.6.3
+lxml==4.9.1
 matplotlib==3.1.1
 numpy==1.16.5
 psutil==5.6.6