diff --git a/src/nomad_material_processing/solution/general.py b/src/nomad_material_processing/solution/general.py
index 60b61fd..f7378cf 100644
--- a/src/nomad_material_processing/solution/general.py
+++ b/src/nomad_material_processing/solution/general.py
@@ -1,6 +1,5 @@
 from typing import TYPE_CHECKING, Union
 
-import numpy as np
 from nomad.datamodel.data import (
     ArchiveSection,
     EntryData,