diff --git a/swagger_py_codegen/templates/sanic/schemas.tpl b/swagger_py_codegen/templates/sanic/schemas.tpl
index fd90c23..747e195 100644
--- a/swagger_py_codegen/templates/sanic/schemas.tpl
+++ b/swagger_py_codegen/templates/sanic/schemas.tpl
@@ -4,6 +4,7 @@
 
 {% include '_do_not_change.tpl' %}
 import six
+from jsonschema import RefResolver
 
 base_path = '{{base_path}}'