diff --git a/requirements-ci.txt b/requirements-ci.txt
index 23f05ee..1c6cbfd 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -5,4 +5,4 @@ coveralls
 pytest >= 4.4.0
 pytest-cov
 flake8
-yhttp-dev >= 3.1.1
+yhttp-dev >= 3.1.2
diff --git a/setup.py b/setup.py
index 4a7ccb5..0619d8b 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@
 
 
 dependencies = [
-    'yhttp >= 5, < 6',
+    'yhttp >= 5.0.2, < 6',
     'yhttp-dbmanager >= 4, < 5',
     'sqlalchemy >= 2',
 ]
diff --git a/tests/test_extension.py b/tests/test_extension.py
index bc78e84..93a6d66 100644
--- a/tests/test_extension.py
+++ b/tests/test_extension.py
@@ -5,7 +5,7 @@
 
 from yhttp.core import json, statuses
 
-from yhttp.ext.sqlalchemy import install
+from yhttp.ext import sqlalchemy as saext, dbmanager
 
 
 def test_extension(app, Given, freshdb):
@@ -23,11 +23,13 @@ class Foo(Base):
         id: Mapped[int] = mapped_column(primary_key=True)
         title: Mapped[str] = mapped_column(String(30))
 
-    dbsession = install(app, Base, create_objects=True)
+    dbmanager.install(app)
+    saext.install(app, Base)
     app.ready()
+    app.db.create_objects()
 
     def mockup():
-        with app.db.sessionfactory() as session, session.begin():
+        with app.db.begin() as session:
             foo = Foo(title='foo 1')
             bar = Foo(title='foo 2')
             session.add_all([foo, bar])
@@ -36,27 +38,27 @@ def mockup():
 
     @app.route()
     @json
-    @dbsession
+    @app.db.session
     def get(req):
-        result = req.session.scalars(select(Foo)).all()
+        result = req.dbsession.scalars(select(Foo)).all()
         return {f.id: f.title for f in result}
 
     @app.route()
     @json
-    @dbsession
+    @app.db.session
     def got(req):
         Foo(title='foo')
         raise statuses.created()
 
     @app.route()
     @json
-    @dbsession
+    @app.db.session
     def err(req):
         Foo(title='qux')
         raise statuses.badrequest()
 
     def getfoo(title):
-        with app.db.sessionfactory() as session, session.begin():
+        with app.db.begin() as session:
             result = session.scalars(
                 select(Foo).where(Foo.title == title)
             ).first()
@@ -84,7 +86,7 @@ def test_exceptions(app, freshdb):
     class Base(DeclarativeBase):
         pass
 
-    install(app, Base)
+    saext.install(app, Base)
 
     if 'db' in app.settings:
         del app.settings['db']
diff --git a/yhttp/ext/sqlalchemy/orm.py b/yhttp/ext/sqlalchemy/orm.py
index f615de5..487c9da 100644
--- a/yhttp/ext/sqlalchemy/orm.py
+++ b/yhttp/ext/sqlalchemy/orm.py
@@ -1,5 +1,8 @@
+import functools
+
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
+from yhttp.core import HTTPStatus
 
 
 class Manager:
@@ -33,23 +36,17 @@ def deinitialize(self):
     def create_objects(self):
         return self.basemodel.metadata.create_all(self.engine)
 
+    def begin(self):
+        return self.sessionfactory.begin()
+
     def session(self, handler):
         @functools.wraps(handler)
         def outter(req, *a, **kw):
-            app = req.application
-            try:
-                req.dbsession = app.db.sessionfactory()
-            except AttributeError:
-                print(
-                    'Please install yhttp-sqlalchemy extention first.',
-                    file=sys.stderr
-                )
-                raise
-
-            with req.dbsession as session, session.begin():
+            with self.begin() as session:
+                req.dbsession = session
                 try:
-                    return func(req, *a, **kw)
-                except y.HTTPStatus as ex:
+                    return handler(req, *a, **kw)
+                except HTTPStatus as ex:
                     if ex.keepheaders:
                         return ex