diff --git a/cli/requirements.txt b/cli/requirements.txt
index b4336fa..1c67a48 100644
--- a/cli/requirements.txt
+++ b/cli/requirements.txt
@@ -51,7 +51,7 @@ kiwisolver==1.1.0
 large-image==0.3.0
 libtiff==0.5.0
 line-profiler==2.1.2
-lxml==4.3.3
+lxml==4.6.2
 Markdown==3.1
 MarkupSafe==1.1.1
 matplotlib==3.0.3