diff --git a/aiogram/contrib/fsm_storage/files.py b/aiogram/contrib/fsm_storage/files.py
index 455ca3f0..c28723a9 100644
--- a/aiogram/contrib/fsm_storage/files.py
+++ b/aiogram/contrib/fsm_storage/files.py
@@ -1,8 +1,8 @@
-import json
 import pathlib
 import pickle
 import typing
 
+from aiogram.utils import json
 from .memory import MemoryStorage
 
 
diff --git a/aiogram/utils/json.py b/aiogram/utils/json.py
index 56f122e4..cf6087ed 100644
--- a/aiogram/utils/json.py
+++ b/aiogram/utils/json.py
@@ -20,28 +20,46 @@ for json_lib in (RAPIDJSON, UJSON):
         break
 
 if mode == RAPIDJSON:
+
+    def dump(*args, **kwargs):
+        return json.dump(*args, **kwargs)
+
+    def load(*args, **kwargs):
+        return json.load(*args, **kwargs)
+
     def dumps(data):
         return json.dumps(data, ensure_ascii=False)
 
-
     def loads(data):
         return json.loads(data, number_mode=json.NM_NATIVE)
 
+
 elif mode == UJSON:
+
+    def dump(*args, **kwargs):
+        return json.dump(*args, **kwargs)
+
+    def load(*args, **kwargs):
+        return json.load(*args, **kwargs)
+
     def loads(data):
         return json.loads(data)
 
-
     def dumps(data):
         return json.dumps(data, ensure_ascii=False)
 
+
 else:
     import json
 
+    def dump(*args, **kwargs):
+        return json.dump(*args, **kwargs)
+
+    def load(*args, **kwargs):
+        return json.load(*args, **kwargs)
 
     def dumps(data):
         return json.dumps(data, ensure_ascii=False)
 
-
     def loads(data):
         return json.loads(data)
diff --git a/tests/__init__.py b/tests/__init__.py
index 920d5663..fe025192 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -26,7 +26,7 @@ class FakeTelegram(aresponses.ResponsesMockServer):
 
     @staticmethod
     def parse_data(message_data):
-        import json
+        from aiogram.utils import json
         from aiogram.utils.payload import _normalize
 
         _body = '{"ok":true,"result":' + json.dumps(_normalize(message_data)) + '}'