diff --git a/src/backend/pyproject.toml b/src/backend/pyproject.toml
index 9cf62bff..f2d0711d 100644
--- a/src/backend/pyproject.toml
+++ b/src/backend/pyproject.toml
@@ -49,7 +49,7 @@ dependencies = [
     "gunicorn==23.0.0",
     "ironcalc==0.5.6",
     "jsonschema==4.24.0",
-    "lxml==5.4.0",
+    "lxml==6.1.0",
     "markdown==3.8",
     "mozilla-django-oidc==4.0.1",
     "nested-multipart-parser==1.5.0",