diff --git a/tests/test_a4_adapter_contract.py b/tests/test_a4_adapter_contract.py
index 1003284..c5756b3 100644
--- a/tests/test_a4_adapter_contract.py
+++ b/tests/test_a4_adapter_contract.py
@@ -209,12 +209,12 @@ def test_purge_artifacts_composite(tmp_path):
     # 1. Claude
     claude_adapter = get_adapter('claude')
     claude_ctx = DiscoveryContext(workspace=ws, agent_name='claude', home_dir=home)
-    c_path = claude_adapter.artifact_path('uuid-c', claude_ctx)
+    c_path = claude_adapter.artifact_path('0c1a5f3e-6b2d-4c8e-9a7f-1d2e3f4a5b6c', claude_ctx)
     os.makedirs(os.path.dirname(c_path), exist_ok=True)
     with open(c_path, 'w') as f:
-        f.write('{"sessionId": "uuid-c"}')
+        f.write('{"sessionId": "0c1a5f3e-6b2d-4c8e-9a7f-1d2e3f4a5b6c"}')
     assert os.path.exists(c_path)
-    purged_c = claude_adapter.purge_artifacts('uuid-c', claude_ctx)
+    purged_c = claude_adapter.purge_artifacts('0c1a5f3e-6b2d-4c8e-9a7f-1d2e3f4a5b6c', claude_ctx)
     assert len(purged_c) == 1
     assert not os.path.exists(c_path)