diff --git a/requirements.txt b/requirements.txt
index 42f16c3..65ca9c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ kaitaistruct==0.9
 kiwisolver==1.3.1
 ldap3==2.8.1
 ldapdomaindump==0.9.3
-lxml==4.6.3
+lxml==4.9.1
 lz4==3.1.3+dfsg
 Mako==1.1.3
 MarkupSafe==1.1.1