diff --git a/require.txt b/require.txt
old mode 100755
new mode 100644
index 6f22675..a3d0168
--- a/require.txt
+++ b/require.txt
@@ -62,7 +62,7 @@ jedi==0.13.3
 Jinja2==2.10
 jinja2-time==0.2.0
 jmespath==0.9.4
-lxml==4.3.3
+lxml==4.6.5
 MarkupSafe==1.1.1
 parso==0.3.4
 pexpect==4.6.0