diff --git a/ReferenceSurfaceGenerator/backend/requirements.txt b/ReferenceSurfaceGenerator/backend/requirements.txt
index 0eea7fe..60a1050 100644
--- a/ReferenceSurfaceGenerator/backend/requirements.txt
+++ b/ReferenceSurfaceGenerator/backend/requirements.txt
@@ -5,4 +5,6 @@
 uvicorn[standard]
 fastapi
 python-multipart
-pytest
\ No newline at end of file
+pytest
+networkx
+lxml
\ No newline at end of file