diff --git a/.github/workflows/code_quality.yaml b/.github/workflows/code_quality.yaml
index 0a3af1d..9c9ee0b 100644
--- a/.github/workflows/code_quality.yaml
+++ b/.github/workflows/code_quality.yaml
@@ -5,6 +5,7 @@ on:
   push:
     branches:
       - 'release-*'
+      - 'improvement-*'
 
 jobs:
   qodana:
diff --git a/panther/__init__.py b/panther/__init__.py
index 463ca25..be7e06e 100644
--- a/panther/__init__.py
+++ b/panther/__init__.py
@@ -1,6 +1,6 @@
 from panther.main import Panther  # noqa: F401
 
-__version__ = '4.2.4'
+__version__ = '4.2.5'
 
 
 def version():
diff --git a/panther/db/queries/mongodb_queries.py b/panther/db/queries/mongodb_queries.py
index 3e468f2..9bfa43b 100644
--- a/panther/db/queries/mongodb_queries.py
+++ b/panther/db/queries/mongodb_queries.py
@@ -114,6 +114,8 @@ async def update(self, _update: dict | None = None, /, **kwargs) -> None:
             else:
                 update_query['$set'] = update_query.get('$set', {})
                 update_query['$set'][field] = value
+                if isinstance(value, dict):
+                    value = type(getattr(self, field))(**value)
                 setattr(self, field, value)
 
         await db.session[self.__class__.__name__].update_one({'_id': self._id}, update_query)
diff --git a/panther/db/queries/pantherdb_queries.py b/panther/db/queries/pantherdb_queries.py
index caa2eae..a509026 100644
--- a/panther/db/queries/pantherdb_queries.py
+++ b/panther/db/queries/pantherdb_queries.py
@@ -96,6 +96,8 @@ async def update(self, _update: dict | None = None, /, **kwargs) -> None:
         self._validate_data(data=kwargs, is_updating=True)
 
         for field, value in document.items():
+            if isinstance(value, dict):
+                value = type(getattr(self, field))(**value)
             setattr(self, field, value)
         db.session.collection(self.__class__.__name__).update_one({'_id': self._id}, **document)
 
diff --git a/panther/db/queries/queries.py b/panther/db/queries/queries.py
index 21bda24..dd51423 100644
--- a/panther/db/queries/queries.py
+++ b/panther/db/queries/queries.py
@@ -2,6 +2,7 @@
 from typing import Sequence, Iterable
 
 from pantherdb import Cursor as PantherDBCursor
+from pydantic import BaseModel
 
 from panther.configs import QueryObservable
 from panther.db.cursor import Cursor
@@ -402,7 +403,12 @@ async def save(self) -> None:
             >>> user = User(name='Ali')
             >>> await user.save()
         """
-        document = {field: getattr(self, field) for field in self.model_fields_set if field != 'request'}
+        document = {
+            field: getattr(self, field).model_dump()
+            if issubclass(type(getattr(self, field)), BaseModel)
+            else getattr(self, field)
+            for field in self.model_fields_set if field != 'request'
+        }
 
         if self.id:
             await self.update(document)