diff --git a/tuplex/python/tests/test_exceptions.py b/tuplex/python/tests/test_exceptions.py
index 6ac3d3705..0869105c7 100644
--- a/tuplex/python/tests/test_exceptions.py
+++ b/tuplex/python/tests/test_exceptions.py
@@ -12,10 +12,11 @@
 import unittest
 import pytest
 from tuplex import Context
-from random import randint, sample, shuffle
+from random import randint, sample, shuffle, seed
 from math import floor
 from helper import options_for_pytest
 
+seed(42)
 
 class TestExceptions: