diff --git a/sidecar/requirements.txt b/sidecar/requirements.txt
index e4a61fd..fe4784b 100644
--- a/sidecar/requirements.txt
+++ b/sidecar/requirements.txt
@@ -1,7 +1,7 @@
 weasyprint==65.1
 Jinja2==3.1.4
 factur-x==3.4
-lxml==5.3.0
+lxml==6.1.1
 pypdf==5.1.0
 segno==1.6.1
 mt-940==4.30.0