diff --git a/requirements.txt b/requirements.txt
index 04e9709..53879f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -69,7 +69,7 @@ language-selector==0.1
 librosa==0.7.2
 llvmlite==0.29.0
 louis==2.6.4
-lxml==3.5.0
+lxml==4.9.1
 Magic-file-extensions==0.2
 Mako==1.0.3
 Markdown==3.1