diff --git a/tests/test_issue2698_isolated_hermes_home.py b/tests/test_issue2698_isolated_hermes_home.py
index b1448a06..2d62c197 100644
--- a/tests/test_issue2698_isolated_hermes_home.py
+++ b/tests/test_issue2698_isolated_hermes_home.py
@@ -13,6 +13,7 @@ from unittest import mock
 
 import pytest
 
+import api.profiles as _profiles_mod
 from api.profiles import (
     _is_isolated_profile_mode,
     list_profiles_api,
@@ -21,6 +22,14 @@ from api.profiles import (
 )
 
 
+@pytest.fixture(autouse=True)
+def _clear_profile_cache():
+    """Clear the profile list cache before and after each test to prevent cross-test leakage."""
+    _profiles_mod._LIST_PROFILES_CACHE = None
+    yield
+    _profiles_mod._LIST_PROFILES_CACHE = None
+
+
 @pytest.fixture
 def temp_hermes_home():
     """Create a temporary .hermes directory structure for testing."""