diff --git a/sqlalchemy-stubs/sql/operators.pyi b/sqlalchemy-stubs/sql/operators.pyi
index 89a08e1..3c65284 100644
--- a/sqlalchemy-stubs/sql/operators.pyi
+++ b/sqlalchemy-stubs/sql/operators.pyi
@@ -46,8 +46,8 @@ class ColumnOperators(Operators):
     def notin_(self, other: Union[Iterable[Any], BindParameter, Select, Alias]): ...
     def notlike(self, other, escape: Optional[Any] = ...): ...
     def notilike(self, other, escape: Optional[Any] = ...): ...
-    def is_(self, other): ...
-    def isnot(self, other): ...
+    def is_(self, other: Optional[bool]): ...
+    def isnot(self, other: Optional[bool]): ...
     def startswith(self, other: str, **kwargs): ...
     def endswith(self, other, **kwargs): ...
     def contains(self, other, **kwargs): ...
diff --git a/sqlalchemy-stubs/sql/sqltypes.pyi b/sqlalchemy-stubs/sql/sqltypes.pyi
index b3d84ba..a4cabee 100644
--- a/sqlalchemy-stubs/sql/sqltypes.pyi
+++ b/sqlalchemy-stubs/sql/sqltypes.pyi
@@ -252,7 +252,7 @@ class JSON(Indexable, TypeEngine[_JSONT]):
     hashable: bool = ...
     NULL: util.symbol = ...
     none_as_null: bool = ...
-    def __init__(self, none_as_null: bool = ...) -> None: ...
+    def __init__(self, none_as_null: bool = ..., astext_type: Optional[String] = ...) -> None: ...
     class JSONElementType(TypeEngine[Union[int, str]]):
         def string_bind_processor(self, dialect): ...
         def string_literal_processor(self, dialect): ...