diff --git a/mis_builder/tests/test_data_sources.py b/mis_builder/tests/test_data_sources.py
index e6f2231d6..deebc9046 100644
--- a/mis_builder/tests/test_data_sources.py
+++ b/mis_builder/tests/test_data_sources.py
@@ -35,6 +35,14 @@ def _create_move(self, date, amount, debit_acc, credit_acc):
         move._post()
         return move
 
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        # Perform the tests with a brand new company to avoid intrusive data from other
+        # modules added to the default company
+        cls.company = cls.env["res.company"].create({"name": "Company Test"})
+        cls.env.user.company_id = cls.company
+
     def setUp(self):
         super().setUp()
         self.account_model = self.env["account.account"]