diff --git a/requirements.txt b/requirements.txt
index 32455ee..9d9513d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ isort==4.3.21
 Keras-Applications==1.0.8
 Keras-Preprocessing==1.1.0
 lazy-object-proxy==1.4.3
-lxml==4.6.3
+lxml==4.9.1
 Markdown==3.1.1
 mccabe==0.6.1
 mutagen==1.44.0