diff --git a/EnvStart/requirements.txt b/EnvStart/requirements.txt
old mode 100755
new mode 100644
index 5bf4a12..38f224e
--- a/EnvStart/requirements.txt
+++ b/EnvStart/requirements.txt
@@ -36,7 +36,7 @@ kiwisolver==1.0.1
 lazy-object-proxy==1.3.1
 ldap==1.0.2
 ldap3==2.5.1
-lxml==4.3.0
+lxml==4.9.1
 matplotlib==2.2.3
 mccabe==0.6.1
 mpmath==1.0.0