diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index d1aa275..522146c
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ Keras-Preprocessing==1.1.2
 kiwisolver==1.3.1
 librosa==0.8.0
 llvmlite==0.36.0
-lxml==4.6.3
+lxml==4.9.1
 Markdown==3.3.4
 matplotlib==3.4.2
 moviepy==1.0.3