diff --git a/google/cloud/logging_v2/handlers/_helpers.py b/google/cloud/logging_v2/handlers/_helpers.py
index fff1e9a8..88eba07a 100644
--- a/google/cloud/logging_v2/handlers/_helpers.py
+++ b/google/cloud/logging_v2/handlers/_helpers.py
@@ -48,7 +48,7 @@ def format_stackdriver_json(record, message):
         "severity": record.levelname,
     }
 
-    return json.dumps(payload)
+    return json.dumps(payload, ensure_ascii=False)
 
 
 def get_request_data_from_flask():
diff --git a/tests/unit/handlers/test_container_engine.py b/tests/unit/handlers/test_container_engine.py
index d2ae8388..280ab9cf 100644
--- a/tests/unit/handlers/test_container_engine.py
+++ b/tests/unit/handlers/test_container_engine.py
@@ -40,7 +40,7 @@ def test_format(self):
 
         handler = self._make_one()
         logname = "loggername"
-        message = "hello world"
+        message = "hello world，嗨 世界"
         record = logging.LogRecord(
             logname, logging.INFO, None, None, message, None, None
         )
@@ -53,4 +53,4 @@ def test_format(self):
         }
         payload = handler.format(record)
 
-        self.assertEqual(payload, json.dumps(expected_payload))
+        self.assertEqual(payload, json.dumps(expected_payload, ensure_ascii=False))