diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 79490e8..238ca4b
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ Keras-Applications==1.0.6
 Keras-Preprocessing==1.0.5
 kiwisolver==1.0.1
 lazy-object-proxy==1.3.1
-lxml==4.3.1
+lxml==4.6.2
 Mako==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.0.3