diff --git a/ereuse_devicehub/parser/computer.py b/ereuse_devicehub/parser/computer.py
index ceb41141..75f0c74c 100644
--- a/ereuse_devicehub/parser/computer.py
+++ b/ereuse_devicehub/parser/computer.py
@@ -3,7 +3,6 @@ import re
 from contextlib import suppress
 from datetime import datetime
 from fractions import Fraction
-from math import hypot
 from typing import Iterator, List, Optional, Type, TypeVar
 
 import dateutil.parser
@@ -13,6 +12,7 @@ from ereuse_utils.nested_lookup import (
     get_nested_dicts_with_key_containing_value,
     get_nested_dicts_with_key_value,
 )
+from numpy import hypot
 
 from ereuse_devicehub.parser import base2, unit, utils
 from ereuse_devicehub.parser.utils import Dumpeable
diff --git a/requirements.txt b/requirements.txt
index 341820b3..7bf94f9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,3 +45,4 @@ python-dotenv==0.14.0
 pyjwt==2.0.0a1
 pint==0.9
 py-dmidecode==0.1.0
+numpy==1.16.3