diff --git a/requirements.txt b/requirements.txt
index c6b2f62..0398b60 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 cycler==0.10.0
 img2pdf==0.4.0
 kiwisolver==1.3.1
-lxml==4.6.3
+lxml==4.6.5
 matplotlib==3.4.1
 numpy==1.20.2
 opencv-python==4.5.1.48