diff --git a/atom/catom.pyi b/atom/catom.pyi
index 6b8bd4d6..b4a4b80a 100644
--- a/atom/catom.pyi
+++ b/atom/catom.pyi
@@ -76,13 +76,14 @@ class Member(Generic[T, S]):
     setattr_mode: Tuple[SetAttr, Any] = ...
     validate_mode: Tuple[Validate, Any] = ...
     getstate_mode: Tuple[GetState, Any] = ...
-    def __init__(self) -> None: ...
     @overload
     def __get__(self, instance: None, owner: Type[Atom]) -> Self: ...
     @overload
     def __get__(self, instance: Atom, owner: Type[Atom]) -> T: ...
     def __set__(self, instance: Atom, value: S) -> None: ...
     def __delete__(self, instance: Atom) -> None: ...
+    def __getstate__(self) -> Any: ...
+    def __setstate__(self, state: Any) -> None: ...
     def tag(self, **kwargs: Any) -> Self: ...
     def clone(self) -> Self: ...
     def add_static_observer(
diff --git a/atom/coerced.pyi b/atom/coerced.pyi
index 147442d4..1ef5a29d 100644
--- a/atom/coerced.pyi
+++ b/atom/coerced.pyi
@@ -186,3 +186,5 @@ class Coerced(Member[T, S]):
         factory: Callable[[], S],
         coercer: Callable[[S], T | T1 | T2 | S],
     ) -> Coerced[T | T1 | T2, T | T1 | T2 | S]: ...
+    def __init__(self, kind, args=None, kwargs=None, *, factory=None, coercer=None):
+        ...