diff --git a/odoo-stubs/sql_db.pyi b/odoo-stubs/sql_db.pyi
index 931b736..bb1ad44 100644
--- a/odoo-stubs/sql_db.pyi
+++ b/odoo-stubs/sql_db.pyi
@@ -1,4 +1,3 @@
-from datetime import datetime
 from re import Pattern
 from threading import Lock, RLock
 from typing import Any, Callable, Generator, Iterable, Iterator, Literal, NoReturn, Sequence, TypeVar
@@ -11,11 +10,11 @@ from .tools import Callbacks
 _T = TypeVar('_T')
 _CursorT = TypeVar('_CursorT', bound=Cursor)
 
-def unbuffer(symb, cr: Cursor) -> str | None: ...
-def undecimalize(symb, cr: Cursor) -> float | None: ...
+def unbuffer(symb, cr: BaseCursor) -> str | None: ...
+def undecimalize(symb, cr: BaseCursor) -> float | None: ...
 def adapt_string(adapted: str) -> psycopg2.extensions.QuotedString: ...
-def flush_env(cr: Cursor, *, clear: bool = ...) -> None: ...
-def clear_env(cr: Cursor) -> None: ...
+def flush_env(cr: BaseCursor, *, clear: bool = ...) -> None: ...
+def clear_env(cr: BaseCursor) -> None: ...
 
 re_from: Pattern
 re_into: Pattern