diff --git a/pyctuator/impl/flask_pyctuator.py b/pyctuator/impl/flask_pyctuator.py
index 1a6ccaa..05ae73a 100644
--- a/pyctuator/impl/flask_pyctuator.py
+++ b/pyctuator/impl/flask_pyctuator.py
@@ -6,7 +6,7 @@
 
 from flask import Flask, Blueprint, request, jsonify, after_this_request
 from flask import Response, make_response
-from flask.json.provider import DefaultJSONProvider
+from flask.json import JSONProvider as DefaultJSONProvider
 # from flask.json import JSONEncoder
 from werkzeug.datastructures import Headers