diff --git a/requirements.txt b/requirements.txt
index 2735c4c..b400e82 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 mutagenx>=1.21
 nose==1.3.0
 pillow==2.2.1
-lxml==3.2.0
+lxml==4.9.1