diff --git a/src/python_pybind11/test/MecanumDriveOdometry_TEST.py b/src/python_pybind11/test/MecanumDriveOdometry_TEST.py
index d94e61a5..16bde377 100644
--- a/src/python_pybind11/test/MecanumDriveOdometry_TEST.py
+++ b/src/python_pybind11/test/MecanumDriveOdometry_TEST.py
@@ -14,7 +14,9 @@
 
 import datetime
 import math
+import time
 import unittest
+
 from ignition.math import MecanumDriveOdometry, Angle
 
 
@@ -38,7 +40,7 @@ def test_constructor(self):
 
         # Setup the wheel parameters, and initialize
         odom.set_wheel_params(wheelSeparation, wheelRadius, wheelRadius,wheelRadius)
-        startTime = datetime.datetime.now()
+        startTime = datetime.timedelta(time.monotonic())
         odom.init(datetime.timedelta())
 
         # Sleep for a little while, then update the odometry with the new wheel
@@ -75,7 +77,7 @@ def test_constructor(self):
         self.assertAlmostEqual(0.0, odom.angular_velocity().radian(), delta=1e-3)
 
         # Initialize again, and odom values should be reset.
-        startTime = datetime.datetime.now()
+        startTime = datetime.timedelta(time.monotonic())
         odom.init(datetime.timedelta())
         self.assertAlmostEqual(0.0, odom.heading().radian())
         self.assertAlmostEqual(0.0, odom.x())