diff --git a/tiramisu_json_api/api.py b/tiramisu_json_api/api.py
index eb58e7b..8026194 100644
--- a/tiramisu_json_api/api.py
+++ b/tiramisu_json_api/api.py
@@ -9,6 +9,8 @@ from .setting import undefined
 from .i18n import _
 
 
+TIRAMISU_JSON_VERSION = '1.0'
+
 
 TYPE = {'boolean': bool,
         'integer': int,
@@ -488,6 +490,8 @@ class Config:
     # config
     def __init__(self,
                  json):
+        if json.get('version') != TIRAMISU_JSON_VERSION:
+            raise Exception('incompatible tiramisu-json format version (got {}, expected {})'.format(json.get('version', '0.0'), TIRAMISU_JSON_VERSION))
         self.model = json['model']
         self.form = json['form']
         self.form = {}