diff --git a/bitarray/__init__.pyi b/bitarray/__init__.pyi
index 05d9276a..886d9d8e 100644
--- a/bitarray/__init__.pyi
+++ b/bitarray/__init__.pyi
@@ -16,7 +16,7 @@ class decodetree:
 
 class bitarray:
     def __init__(self,
-                 initializer: Union[int, str, Iterable[Bool], None]=0,
+                 initializer: Union[int, str, Iterable[Bool], None] = ...,
                  endian: str = ..., /) -> None: ...
 
     def all(self) -> bool: ...
@@ -27,8 +27,8 @@ class bitarray:
     def clear(self) -> None: ...
     def copy(self) -> bitarray: ...
     def count(self,
-              value: Bool=1,
-              start: int=0,
+              value: Bool = ...,
+              start: int = ...,
               stop: int = ..., /) -> int: ...
 
     def decode(self, code: Union[Codedict, decodetree], /) -> list: ...
@@ -38,14 +38,14 @@ class bitarray:
     def fill(self) -> int: ...
     def find(self,
              a: Union[bitarray, Bool],
-             start: int = 0,
+             start: int = ...,
              stop: int = ..., /) -> int: ...
 
     def frombytes(self, a: bytes, /) -> None: ...
-    def fromfile(self, f: BinaryIO, n: int=-1, /) -> None: ...
+    def fromfile(self, f: BinaryIO, n: int = ..., /) -> None: ...
     def index(self,
               a: Union[bitarray, Bool],
-              start: int = 0,
+              start: int = ...,
               stop: int = ..., /) -> int: ...
 
     def insert(self, i: int, value: Bool, /) -> None: ...
diff --git a/bitarray/util.pyi b/bitarray/util.pyi
index 0747a52a..3d7a3905 100644
--- a/bitarray/util.pyi
+++ b/bitarray/util.pyi
@@ -18,7 +18,7 @@ def rindex(a: bitarray, Value: Bool) -> int: ...
 def strip(a: bitarray, mode: str = ...) -> bitarray: ...
 
 def count_n(a: bitarray, n: int, /) -> int: ...
-def parity(a: bitarray, /) -> int: ...
+def parity(a: bitarray, /) -> Bool: ...
 def count_and(a: bitarray, b: bitarray, /) -> int: ...
 def count_or(a: bitarray, b: bitarray, /) -> int: ...
 def count_xor(a: bitarray, b: bitarray, /) -> int: ...