diff --git a/docs_src/dependencies/tutorial007_py310.py b/docs_src/dependencies/tutorial007_py310.py
index 2e4ab4777..717c37022 100644
--- a/docs_src/dependencies/tutorial007_py310.py
+++ b/docs_src/dependencies/tutorial007_py310.py
@@ -1,3 +1,4 @@
+from .database import DBSession
 async def get_db():
     db = DBSession()
     try: