diff --git a/django-stubs/db/models/expressions.pyi b/django-stubs/db/models/expressions.pyi
index 086aaae..e4372ac 100644
--- a/django-stubs/db/models/expressions.pyi
+++ b/django-stubs/db/models/expressions.pyi
@@ -1,4 +1,5 @@
 from datetime import datetime, timedelta
+from decimal import Decimal
 from typing import Any, Callable, Dict, Iterator, List, Optional, Sequence, Set, Tuple, Type, TypeVar, Union, Iterable
 
 from django.db.models.lookups import Lookup
@@ -15,6 +16,8 @@ class SQLiteNumericMixin:
 
 _Self = TypeVar("_Self")
 
+_Numeric = Union[float, Decimal]
+
 class Combinable:
     ADD: str = ...
     SUB: str = ...
@@ -27,25 +30,25 @@ class Combinable:
     BITLEFTSHIFT: str = ...
     BITRIGHTSHIFT: str = ...
     def __neg__(self: _Self) -> _Self: ...
-    def __add__(self: _Self, other: Optional[Union[timedelta, Combinable, float, str]]) -> _Self: ...
-    def __sub__(self: _Self, other: Union[timedelta, Combinable, float]) -> _Self: ...
-    def __mul__(self: _Self, other: Union[timedelta, Combinable, float]) -> _Self: ...
-    def __truediv__(self: _Self, other: Union[Combinable, float]) -> _Self: ...
-    def __itruediv__(self: _Self, other: Union[Combinable, float]) -> _Self: ...
+    def __add__(self: _Self, other: Optional[Union[timedelta, Combinable, _Numeric, str]]) -> _Self: ...
+    def __sub__(self: _Self, other: Union[timedelta, Combinable, _Numeric]) -> _Self: ...
+    def __mul__(self: _Self, other: Union[timedelta, Combinable, _Numeric]) -> _Self: ...
+    def __truediv__(self: _Self, other: Union[Combinable, _Numeric]) -> _Self: ...
+    def __itruediv__(self: _Self, other: Union[Combinable, _Numeric]) -> _Self: ...
     def __mod__(self: _Self, other: Union[int, Combinable]) -> _Self: ...
-    def __pow__(self: _Self, other: Union[float, Combinable]) -> _Self: ...
+    def __pow__(self: _Self, other: Union[_Numeric, Combinable]) -> _Self: ...
     def __and__(self: _Self, other: Combinable) -> _Self: ...
     def bitand(self: _Self, other: int) -> _Self: ...
     def bitleftshift(self: _Self, other: int) -> _Self: ...
     def bitrightshift(self: _Self, other: int) -> _Self: ...
     def __or__(self: _Self, other: Combinable) -> _Self: ...
     def bitor(self: _Self, other: int) -> _Self: ...
-    def __radd__(self, other: Optional[Union[datetime, float, Combinable]]) -> Combinable: ...
-    def __rsub__(self, other: Union[float, Combinable]) -> Combinable: ...
-    def __rmul__(self, other: Union[float, Combinable]) -> Combinable: ...
-    def __rtruediv__(self, other: Union[float, Combinable]) -> Combinable: ...
+    def __radd__(self, other: Optional[Union[datetime, _Numeric, Combinable]]) -> Combinable: ...
+    def __rsub__(self, other: Union[_Numeric, Combinable]) -> Combinable: ...
+    def __rmul__(self, other: Union[_Numeric, Combinable]) -> Combinable: ...
+    def __rtruediv__(self, other: Union[_Numeric, Combinable]) -> Combinable: ...
     def __rmod__(self, other: Union[int, Combinable]) -> Combinable: ...
-    def __rpow__(self, other: Union[float, Combinable]) -> Combinable: ...
+    def __rpow__(self, other: Union[_Numeric, Combinable]) -> Combinable: ...
     def __rand__(self, other: Any) -> Combinable: ...
     def __ror__(self, other: Any) -> Combinable: ...