diff --git a/construct-stubs/core.pyi b/construct-stubs/core.pyi
index 83a7525..392c8fc 100644
--- a/construct-stubs/core.pyi
+++ b/construct-stubs/core.pyi
@@ -30,7 +30,7 @@ from construct.lib import (
 # type hint. But for supporting pyright/pylance, the same type hint has to be used as the return type of __new__.
 # (see discussion here: https://github.com/python/typeshed/issues/4846).
 
-StreamType = t.BinaryIO
+StreamType = t.IO[bytes]
 FilenameType = t.Union[str, bytes, os.PathLike[str], os.PathLike[bytes]]
 PathType = str
 ContextKWType = t.Any
@@ -75,18 +75,18 @@ class CancelParsing(ConstructError): ...
 # used internally
 # ===============================================================================
 def stream_read(
-    stream: t.BinaryIO, length: int, path: t.Optional[PathType]
+    stream: StreamType, length: int, path: t.Optional[PathType]
 ) -> bytes: ...
-def stream_read_entire(stream: t.BinaryIO, path: t.Optional[PathType]) -> bytes: ...
+def stream_read_entire(stream: StreamType, path: t.Optional[PathType]) -> bytes: ...
 def stream_write(
-    stream: t.BinaryIO, data: bytes, length: int, path: t.Optional[PathType]
+    stream: StreamType, data: bytes, length: int, path: t.Optional[PathType]
 ) -> None: ...
 def stream_seek(
-    stream: t.BinaryIO, offset: int, whence: int, path: t.Optional[PathType]
+    stream: StreamType, offset: int, whence: int, path: t.Optional[PathType]
 ) -> int: ...
-def stream_tell(stream: t.BinaryIO, path: t.Optional[PathType]) -> int: ...
-def stream_size(stream: t.BinaryIO) -> int: ...
-def stream_iseof(stream: t.BinaryIO) -> bool: ...
+def stream_tell(stream: StreamType, path: t.Optional[PathType]) -> int: ...
+def stream_size(stream: StreamType) -> int: ...
+def stream_iseof(stream: StreamType) -> bool: ...
 def evaluate(param: ConstantOrContextLambda2[T], context: Context) -> T: ...
 
 # ===============================================================================