diff --git a/stdlib/decimal.pyi b/stdlib/decimal.pyi
index c888e5874..89512dbbc 100644
--- a/stdlib/decimal.pyi
+++ b/stdlib/decimal.pyi
@@ -146,8 +146,8 @@ class Decimal:
     def scaleb(self, other: _Decimal, context: Context | None = ...) -> Decimal: ...
     def shift(self, other: _Decimal, context: Context | None = ...) -> Decimal: ...
     def __reduce__(self) -> tuple[type[Decimal], tuple[str]]: ...
-    def __copy__(self) -> Decimal: ...
-    def __deepcopy__(self, __memo: Any) -> Decimal: ...
+    def __copy__(self: Self) -> Self: ...
+    def __deepcopy__(self: Self, __memo: Any) -> Self: ...
     def __format__(self, __specifier: str, __context: Context | None = ...) -> str: ...
 
 class _ContextManager:
diff --git a/stubs/Pygments/pygments/token.pyi b/stubs/Pygments/pygments/token.pyi
index 94468ba3e..9fb24b751 100644
--- a/stubs/Pygments/pygments/token.pyi
+++ b/stubs/Pygments/pygments/token.pyi
@@ -1,4 +1,6 @@
+from _typeshed import Self
 from collections.abc import Mapping
+from typing import Any
 
 class _TokenType(tuple[str, ...]):
     parent: _TokenType | None
@@ -6,8 +8,8 @@ class _TokenType(tuple[str, ...]):
     subtypes: set[_TokenType]
     def __contains__(self, val: _TokenType) -> bool: ...  # type: ignore[override]
     def __getattr__(self, name: str) -> _TokenType: ...
-    def __copy__(self): ...
-    def __deepcopy__(self, memo): ...
+    def __copy__(self: Self) -> Self: ...
+    def __deepcopy__(self: Self, memo: Any) -> Self: ...
 
 Token: _TokenType
 Text: _TokenType
diff --git a/stubs/babel/babel/support.pyi b/stubs/babel/babel/support.pyi
index a9e393225..09ccd93ab 100644
--- a/stubs/babel/babel/support.pyi
+++ b/stubs/babel/babel/support.pyi
@@ -44,8 +44,8 @@ class LazyProxy:
     def __delitem__(self, key) -> None: ...
     def __getitem__(self, key): ...
     def __setitem__(self, key, value) -> None: ...
-    def __copy__(self): ...
-    def __deepcopy__(self, memo): ...
+    def __copy__(self) -> LazyProxy: ...
+    def __deepcopy__(self, memo: Any) -> LazyProxy: ...
 
 class NullTranslations(gettext.NullTranslations):
     DEFAULT_DOMAIN: Any
diff --git a/stubs/invoke/invoke/tasks.pyi b/stubs/invoke/invoke/tasks.pyi
index 7e4d5e5b4..cc20ae2ff 100644
--- a/stubs/invoke/invoke/tasks.pyi
+++ b/stubs/invoke/invoke/tasks.pyi
@@ -1,3 +1,4 @@
+from _typeshed import Self
 from typing import Any
 
 from .config import Config
@@ -61,7 +62,7 @@ class Call:
         self, task: Task, called_as: str | None = ..., args: tuple[Any, ...] | None = ..., kwargs: dict[str, Any] | None = ...
     ) -> None: ...
     def __getattr__(self, name: str) -> Any: ...
-    def __deepcopy__(self, memo: Any) -> Task: ...
+    def __deepcopy__(self: Self, memo: Any) -> Self: ...
     def __eq__(self, other: Call) -> bool: ...  # type: ignore[override]
     def make_context(self, config: Config) -> Context: ...
     def clone_data(self): ...
diff --git a/stubs/protobuf/google/protobuf/message.pyi b/stubs/protobuf/google/protobuf/message.pyi
index c346b5363..e292803dc 100644
--- a/stubs/protobuf/google/protobuf/message.pyi
+++ b/stubs/protobuf/google/protobuf/message.pyi
@@ -12,7 +12,7 @@ _M = TypeVar("_M", bound=Message)  # message type (of self)
 
 class Message:
     DESCRIPTOR: Descriptor
-    def __deepcopy__(self, memo=...): ...
+    def __deepcopy__(self: Self, memo: Any = ...) -> Self: ...
     def __eq__(self, other_msg): ...
     def __ne__(self, other_msg): ...
     def MergeFrom(self: Self, other_msg: Self) -> None: ...
diff --git a/stubs/stripe/stripe/stripe_object.pyi b/stubs/stripe/stripe/stripe_object.pyi
index 76def4e09..f9de1deeb 100644
--- a/stubs/stripe/stripe/stripe_object.pyi
+++ b/stubs/stripe/stripe/stripe_object.pyi
@@ -51,5 +51,5 @@ class StripeObject(dict[Any, Any]):
     @property
     def stripe_id(self): ...
     def serialize(self, previous): ...
-    def __copy__(self): ...
-    def __deepcopy__(self, memo): ...
+    def __copy__(self) -> StripeObject: ...
+    def __deepcopy__(self, memo: Any) -> StripeObject: ...