diff --git a/OMPython/ModelicaSystem.py b/OMPython/ModelicaSystem.py
index 9150023d..71432449 100644
--- a/OMPython/ModelicaSystem.py
+++ b/OMPython/ModelicaSystem.py
@@ -37,7 +37,6 @@
 import itertools
 import logging
 import numbers
-import numpy as np
 import os
 import queue
 import textwrap
@@ -46,8 +45,16 @@
 import warnings
 import xml.etree.ElementTree as ET
 
-from OMPython.OMCSession import (OMCSessionException, OMCSessionRunData, OMCSessionZMQ,
-                                 OMCProcess, OMCProcessLocal, OMCPath)
+import numpy as np
+
+from OMPython.OMCSession import (
+    OMCSessionException,
+    OMCSessionRunData,
+    OMCSessionZMQ,
+    OMCProcess,
+    OMCProcessLocal,
+    OMCPath,
+)
 
 # define logger using the current module name as ID
 logger = logging.getLogger(__name__)
diff --git a/OMPython/OMCSession.py b/OMPython/OMCSession.py
index f623f976..fca7c47d 100644
--- a/OMPython/OMCSession.py
+++ b/OMPython/OMCSession.py
@@ -42,8 +42,6 @@
 import os
 import pathlib
 import platform
-import psutil
-import pyparsing
 import re
 import shutil
 import signal
@@ -56,6 +54,9 @@
 import warnings
 import zmq
 
+import psutil
+import pyparsing
+
 # TODO: replace this with the new parser
 from OMPython.OMTypedParser import om_parser_typed
 from OMPython.OMParser import om_parser_basic