diff --git a/stubs/urllib3/@tests/stubtest_allowlist.txt b/stubs/urllib3/@tests/stubtest_allowlist.txt
index 2252b59a5..62961f894 100644
--- a/stubs/urllib3/@tests/stubtest_allowlist.txt
+++ b/stubs/urllib3/@tests/stubtest_allowlist.txt
@@ -23,13 +23,11 @@ urllib3.connectionpool.HTTPConnectionPool.__init__
 urllib3.connectionpool.HTTPConnectionPool.urlopen
 urllib3.connectionpool.HTTPSConnection.__init__
 urllib3.connectionpool.HTTPSConnectionPool.__init__
-urllib3.connectionpool.ProxyError.__init__
 urllib3.connectionpool.RequestMethods.request_encode_url
 urllib3.connectionpool.Retry.is_forced_retry
 urllib3.connectionpool.Retry.sleep
 urllib3.connectionpool.VerifiedHTTPSConnection.__init__
 urllib3.connectionpool.VerifiedHTTPSConnection.set_cert
-urllib3.exceptions.ProxyError.__init__
 urllib3.fields.RequestField.__init__
 urllib3.fields.RequestField.from_tuples
 urllib3.filepost.RequestField.__init__
diff --git a/stubs/urllib3/urllib3/exceptions.pyi b/stubs/urllib3/urllib3/exceptions.pyi
index ddb4e83ba..8c2090613 100644
--- a/stubs/urllib3/urllib3/exceptions.pyi
+++ b/stubs/urllib3/urllib3/exceptions.pyi
@@ -1,50 +1,87 @@
+from email.errors import MessageDefect
+from http.client import IncompleteRead as httplib_IncompleteRead
 from typing import Any
 
+from urllib3.connectionpool import ConnectionPool, HTTPResponse
+from urllib3.util.retry import Retry
+
 class HTTPError(Exception): ...
 class HTTPWarning(Warning): ...
 
 class PoolError(HTTPError):
-    pool: Any
-    def __init__(self, pool, message) -> None: ...
-    def __reduce__(self): ...
+    pool: ConnectionPool
+    def __init__(self, pool: ConnectionPool, message: str) -> None: ...
 
 class RequestError(PoolError):
-    url: Any
-    def __init__(self, pool, url, message) -> None: ...
-    def __reduce__(self): ...
+    url: str
+    def __init__(self, pool: ConnectionPool, url: str, message: str) -> None: ...
 
 class SSLError(HTTPError): ...
-class ProxyError(HTTPError): ...
+
+class ProxyError(HTTPError):
+    original_error: Exception
+    def __init__(self, message: str, error: Exception, *args: Any) -> None: ...
+
 class DecodeError(HTTPError): ...
 class ProtocolError(HTTPError): ...
 
-ConnectionError: Any
+ConnectionError = ProtocolError
 
 class MaxRetryError(RequestError):
-    reason: Any
-    def __init__(self, pool, url, reason=...) -> None: ...
+    reason: Exception | None
+    def __init__(self, pool: ConnectionPool, url: str, reason: Exception | None = ...) -> None: ...
 
 class HostChangedError(RequestError):
-    retries: Any
-    def __init__(self, pool, url, retries=...) -> None: ...
+    retries: Retry | int
+    def __init__(self, pool: ConnectionPool, url: str, retries: Retry | int = ...) -> None: ...
 
 class TimeoutStateError(HTTPError): ...
 class TimeoutError(HTTPError): ...
 class ReadTimeoutError(TimeoutError, RequestError): ...
 class ConnectTimeoutError(TimeoutError): ...
+class NewConnectionError(ConnectTimeoutError, HTTPError): ...
 class EmptyPoolError(PoolError): ...
 class ClosedPoolError(PoolError): ...
 class LocationValueError(ValueError, HTTPError): ...
 
 class LocationParseError(LocationValueError):
-    location: Any
-    def __init__(self, location) -> None: ...
+    location: str
+    def __init__(self, location: str) -> None: ...
+
+class URLSchemeUnknown(LocationValueError):
+    scheme: str
+    def __init__(self, scheme: str) -> None: ...
 
 class ResponseError(HTTPError):
-    GENERIC_ERROR: Any
-    SPECIFIC_ERROR: Any
+    GENERIC_ERROR: str
+    SPECIFIC_ERROR: str
 
 class SecurityWarning(HTTPWarning): ...
+class SubjectAltNameWarning(SecurityWarning): ...
 class InsecureRequestWarning(SecurityWarning): ...
 class SystemTimeWarning(SecurityWarning): ...
 class InsecurePlatformWarning(SecurityWarning): ...
+class SNIMissingWarning(HTTPWarning): ...
+class DependencyWarning(HTTPWarning): ...
+class ResponseNotChunked(ProtocolError, ValueError): ...
+class BodyNotHttplibCompatible(HTTPError): ...
+
+class IncompleteRead(HTTPError, httplib_IncompleteRead):
+    def __init__(self, partial: bytes, expected: int | None) -> None: ...
+
+class InvalidChunkLength(HTTPError, httplib_IncompleteRead):
+    response: HTTPResponse
+    length: bytes
+    def __init__(self, response: HTTPResponse, length: bytes) -> None: ...
+
+class InvalidHeader(HTTPError): ...
+
+class ProxySchemeUnknown(AssertionError, URLSchemeUnknown):
+    def __init__(self, scheme: str | None) -> None: ...
+
+class ProxySchemeUnsupported(ValueError): ...
+
+class HeaderParsingError(HTTPError):
+    def __init__(self, defects: list[MessageDefect], unparsed_data: str | bytes | None) -> None: ...
+
+class UnrewindableBodyError(HTTPError): ...