diff --git a/stubs/requests/requests/utils.pyi b/stubs/requests/requests/utils.pyi
index f9b64a15a..5fa6519d8 100644
--- a/stubs/requests/requests/utils.pyi
+++ b/stubs/requests/requests/utils.pyi
@@ -1,54 +1,59 @@
-from collections.abc import Iterable, Mapping
+from collections.abc import Generator, Iterable, Mapping
+from contextlib import AbstractContextManager
 from typing import Any, AnyStr
+from typing_extensions import TypeAlias
 
 from . import compat, cookies, exceptions, structures
+from .models import PreparedRequest
 
+_Uri: TypeAlias = str | bytes
 OrderedDict = compat.OrderedDict
 cookiejar_from_dict = cookies.cookiejar_from_dict
 CaseInsensitiveDict = structures.CaseInsensitiveDict
 InvalidURL = exceptions.InvalidURL
 
-NETRC_FILES: Any
+NETRC_FILES: tuple[str, str]
 DEFAULT_CA_BUNDLE_PATH: Any
-DEFAULT_PORTS: Any
+DEFAULT_PORTS: dict[str, int]
+DEFAULT_ACCEPT_ENCODING: str
 
 def dict_to_sequence(d): ...
 def super_len(o): ...
-def get_netrc_auth(url, raise_errors: bool = ...): ...
+def get_netrc_auth(url: _Uri, raise_errors: bool = ...) -> tuple[str, str] | None: ...
 def guess_filename(obj): ...
 def extract_zipped_paths(path): ...
 def from_key_val_list(value): ...
 def to_key_val_list(value): ...
 def parse_list_header(value): ...
 def parse_dict_header(value): ...
-def unquote_header_value(value, is_filename=...): ...
+def unquote_header_value(value, is_filename: bool = ...): ...
 def dict_from_cookiejar(cj): ...
 def add_dict_to_cookiejar(cj, cookie_dict): ...
 def get_encodings_from_content(content): ...
 def get_encoding_from_headers(headers): ...
 def stream_decode_response_unicode(iterator, r): ...
-def iter_slices(string, slice_length): ...
+def iter_slices(string: str, slice_length: int | None) -> Generator[str, None, None]: ...
 def get_unicode_from_response(r): ...
 
-UNRESERVED_SET: Any
+UNRESERVED_SET: frozenset[str]
 
-def unquote_unreserved(uri): ...
-def requote_uri(uri): ...
-def address_in_network(ip, net): ...
-def dotted_netmask(mask): ...
-def is_ipv4_address(string_ip): ...
-def is_valid_cidr(string_network): ...
-def set_environ(env_name, value): ...
-def should_bypass_proxies(url, no_proxy: Iterable[AnyStr] | None) -> bool: ...
-def get_environ_proxies(url, no_proxy: Iterable[AnyStr] | None = ...) -> dict[Any, Any]: ...
-def select_proxy(url: str, proxies: Mapping[Any, Any] | None): ...
-def default_user_agent(name=...): ...
-def default_headers(): ...
+def unquote_unreserved(uri: str) -> str: ...
+def requote_uri(uri: str) -> str: ...
+def address_in_network(ip: str, net: str) -> bool: ...
+def dotted_netmask(mask: int) -> str: ...
+def is_ipv4_address(string_ip: str) -> bool: ...
+def is_valid_cidr(string_network: str) -> bool: ...
+def set_environ(env_name: str, value: None) -> AbstractContextManager[None]: ...
+def should_bypass_proxies(url: _Uri, no_proxy: Iterable[str] | None) -> bool: ...
+def get_environ_proxies(url: _Uri, no_proxy: Iterable[str] | None = ...) -> dict[Any, Any]: ...
+def select_proxy(url: _Uri, proxies: Mapping[Any, Any] | None): ...
+def default_user_agent(name: str = ...) -> str: ...
+def default_headers() -> CaseInsensitiveDict[str]: ...
 def parse_header_links(value: str) -> list[dict[str, str]]: ...
 def guess_json_utf(data): ...
 def prepend_scheme_if_needed(url, new_scheme): ...
-def get_auth_from_url(url): ...
+def get_auth_from_url(url: _Uri) -> tuple[str, str]: ...
 def to_native_string(string, encoding=...): ...
-def urldefragauth(url): ...
-def rewind_body(prepared_request): ...
+def urldefragauth(url: _Uri): ...
+def rewind_body(prepared_request: PreparedRequest) -> None: ...
 def check_header_validity(header: tuple[AnyStr, AnyStr]) -> None: ...