diff --git a/stdlib/lzma.pyi b/stdlib/lzma.pyi
index 868da0f05..9d75c627f 100644
--- a/stdlib/lzma.pyi
+++ b/stdlib/lzma.pyi
@@ -83,7 +83,7 @@ PRESET_EXTREME: int  # v big number
 @final
 class LZMADecompressor:
     def __init__(self, format: int | None = ..., memlimit: int | None = ..., filters: _FilterChain | None = ...) -> None: ...
-    def decompress(self, data: bytes, max_length: int = ...) -> bytes: ...
+    def decompress(self, data: ReadableBuffer, max_length: int = ...) -> bytes: ...
     @property
     def check(self) -> int: ...
     @property
@@ -99,7 +99,7 @@ class LZMACompressor:
     def __init__(
         self, format: int | None = ..., check: int = ..., preset: int | None = ..., filters: _FilterChain | None = ...
     ) -> None: ...
-    def compress(self, __data: bytes) -> bytes: ...
+    def compress(self, __data: ReadableBuffer) -> bytes: ...
     def flush(self) -> bytes: ...
 
 class LZMAError(Exception): ...
@@ -189,7 +189,9 @@ def open(
     newline: str | None = ...,
 ) -> LZMAFile | TextIO: ...
 def compress(
-    data: bytes, format: int = ..., check: int = ..., preset: int | None = ..., filters: _FilterChain | None = ...
+    data: ReadableBuffer, format: int = ..., check: int = ..., preset: int | None = ..., filters: _FilterChain | None = ...
+) -> bytes: ...
+def decompress(
+    data: ReadableBuffer, format: int = ..., memlimit: int | None = ..., filters: _FilterChain | None = ...
 ) -> bytes: ...
-def decompress(data: bytes, format: int = ..., memlimit: int | None = ..., filters: _FilterChain | None = ...) -> bytes: ...
 def is_check_supported(__check_id: int) -> bool: ...