diff --git a/sqlalchemy-stubs/sql/operators.pyi b/sqlalchemy-stubs/sql/operators.pyi
index 89a08e1..34112e6 100644
--- a/sqlalchemy-stubs/sql/operators.pyi
+++ b/sqlalchemy-stubs/sql/operators.pyi
@@ -1,6 +1,6 @@
 from typing import Any, Iterable, Optional, Text, Union
-from .selectable import Select, Alias
-from .elements import BindParameter, UnaryExpression
+from .selectable import Select as Select, Alias
+from .elements import BindParameter as BindParameter, UnaryExpression, BinaryExpression
 
 class Operators(object):
     def __and__(self, other): ...
@@ -46,24 +46,24 @@ 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 startswith(self, other: str, **kwargs): ...
-    def endswith(self, other, **kwargs): ...
-    def contains(self, other, **kwargs): ...
+    def is_(self, other: Optional[bool]) -> BinaryExpression: ...
+    def isnot(self, other: Optional[bool]) -> BinaryExpression: ...
+    def startswith(self, other: str, **kwargs) -> BinaryExpression: ...
+    def endswith(self, other: str, **kwargs) -> BinaryExpression: ...
+    def contains(self, other, **kwargs) -> BinaryExpression: ...
     def match(self, other, **kwargs): ...
     def desc(self) -> UnaryExpression: ...
     def asc(self) -> UnaryExpression: ...
-    def nullsfirst(self): ...
-    def nullslast(self): ...
-    def collate(self, collation): ...
+    def nullsfirst(self) -> UnaryExpression: ...
+    def nullslast(self) -> UnaryExpression: ...
+    def collate(self, collation) -> BinaryExpression: ...
     def __radd__(self, other): ...
     def __rsub__(self, other): ...
     def __rmul__(self, other): ...
     def __rdiv__(self, other): ...
     def __rmod__(self, other): ...
     def between(self, cleft, cright, symmetric: bool = ...): ...
-    def distinct(self): ...
+    def distinct(self) -> UnaryExpression: ...
     def any_(self): ...
     def all_(self): ...
     def __add__(self, other): ...