diff --git a/requirements.txt b/requirements.txt
index 951926b..cc60ccb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ keyring==21.1.0
 kiwisolver==1.1.0
 lazy-object-proxy==1.4.3
 llvmlite==0.31.0
-lxml==4.4.2
+lxml==4.6.2
 MarkupSafe==1.1.1
 matplotlib==3.1.2
 mccabe==0.6.1