diff --git a/tests/test_core/test_encoder.py b/tests/test_core/test_encoder.py
index 083bf5a..2f82646 100644
--- a/tests/test_core/test_encoder.py
+++ b/tests/test_core/test_encoder.py
@@ -14,6 +14,7 @@
         ({"foo": True}, {"foo": "true"}),
         ({"foo": False}, {"foo": "false"}),
         ({"IP": ["127.0.0.1"]}, {"IP.0": "127.0.0.1"}),
+        ({"TemplateParams": [u"中文"]}, {"TemplateParams.0": u"中文"}),
         ({"IP": ["foo", "bar"]}, {"IP.0": "foo", "IP.1": "bar"}),
         ({"IP": [{"foo": "bar"}]}, {"IP.0.foo": "bar"}),
     ],
diff --git a/ucloud/core/typesystem/encoder.py b/ucloud/core/typesystem/encoder.py
index 1962f09..b873397 100644
--- a/ucloud/core/typesystem/encoder.py
+++ b/ucloud/core/typesystem/encoder.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+from ucloud.core.utils.compat import str
+
 
 def encode(d):
     result = {}
diff --git a/ucloud/version.py b/ucloud/version.py
index 3a06d93..3179213 100644
--- a/ucloud/version.py
+++ b/ucloud/version.py
@@ -1,3 +1,3 @@
 # -*- coding: utf-8 -*-
 
-version = "0.9.1"
+version = "0.9.2"