diff --git a/stix2/test/v21/test_base.py b/stix2/test/v21/test_base.py
index 18d3a50..d753ab1 100644
--- a/stix2/test/v21/test_base.py
+++ b/stix2/test/v21/test_base.py
@@ -1,9 +1,11 @@
 import datetime as dt
 import json
+import uuid
 
 import pytest
 import pytz
 
+import stix2
 from stix2.base import STIXJSONEncoder
 
 
@@ -23,3 +25,14 @@ def test_encode_json_object():
         json.dumps(test_dict, cls=STIXJSONEncoder)
 
     assert " is not JSON serializable" in str(excinfo.value)
+
+
+def test_deterministic_id_unicode():
+    mutex = {'name': u'D*Fl#Ed*\u00a3\u00a8', 'type': 'mutex'}
+    obs = stix2.parse_observable(mutex, version="2.1")
+
+    dd_idx = obs.id.index("--")
+    id_uuid = uuid.UUID(obs.id[dd_idx+2:])
+
+    assert id_uuid.variant == uuid.RFC_4122
+    assert id_uuid.version == 5