diff --git a/requirements.txt b/requirements.txt
index 27d39dc7..7bb0c8ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 behave==1.2.6
-lxml==4.2.4
+lxml==4.9.1
 phpserialize==1.3
 PyYAML==5.1
 requests==2.20.0