1 files changed, 5 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql/selectable.py b/lib/sqlalchemy/sql/selectable.py
index 836c30af7..a5cbffb5e 100644
--- a/lib/sqlalchemy/sql/selectable.py
+++ b/lib/sqlalchemy/sql/selectable.py
@@ -19,9 +19,11 @@ import itertools
 from operator import attrgetter
 import typing
 from typing import Any as TODO_Any
+from typing import Any
 from typing import NamedTuple
 from typing import Optional
 from typing import Tuple
+from typing import TypeVar
 
 from . import cache_key
 from . import coercions
@@ -72,6 +74,8 @@ from .. import util
 
 and_ = BooleanClauseList.and_
 
+_T = TypeVar("_T", bound=Any)
+
 
 class _OffsetLimitParam(BindParameter):
     inherit_cache = True
@@ -5528,7 +5532,7 @@ class ScalarSelect(roles.InElementRole, Generative, Grouping):
         return self
 
 
-class Exists(UnaryExpression):
+class Exists(UnaryExpression[_T]):
     """Represent an ``EXISTS`` clause.
 
     See :func:`_sql.exists` for a description of usage.