diff --git a/stubs/html5lib/METADATA.toml b/stubs/html5lib/METADATA.toml
index b1fa786dac26..23a4684130a6 100644
--- a/stubs/html5lib/METADATA.toml
+++ b/stubs/html5lib/METADATA.toml
@@ -1,7 +1,5 @@
 version = "1.1.*"
 upstream_repository = "https://github.com/html5lib/html5lib-python"
-partial_stub = true
 
 [tool.stubtest]
-ignore_missing_stub = true
 extras = ["all"]
diff --git a/stubs/html5lib/html5lib/__init__.pyi b/stubs/html5lib/html5lib/__init__.pyi
index 709bc661394a..3a24c70e9f41 100644
--- a/stubs/html5lib/html5lib/__init__.pyi
+++ b/stubs/html5lib/html5lib/__init__.pyi
@@ -1,6 +1,10 @@
+from typing import Final
+
 from .html5parser import HTMLParser as HTMLParser, parse as parse, parseFragment as parseFragment
 from .serializer import serialize as serialize
 from .treebuilders import getTreeBuilder as getTreeBuilder
 from .treewalkers import getTreeWalker as getTreeWalker
 
-__version__: str
+__all__ = ["HTMLParser", "parse", "parseFragment", "getTreeBuilder", "getTreeWalker", "serialize"]
+
+__version__: Final[str]
diff --git a/stubs/html5lib/html5lib/_ihatexml.pyi b/stubs/html5lib/html5lib/_ihatexml.pyi
index cd710c885815..44115cfbab7a 100644
--- a/stubs/html5lib/html5lib/_ihatexml.pyi
+++ b/stubs/html5lib/html5lib/_ihatexml.pyi
@@ -1,39 +1,41 @@
-from typing import Any
+import re
+from _typeshed import Incomplete
+from collections.abc import Iterable
 
 baseChar: str
 ideographic: str
 combiningCharacter: str
 digit: str
 extender: str
-letter: Any
-name: Any
-nameFirst: Any
-reChar: Any
-reCharRange: Any
+letter: str
+name: str
+nameFirst: str
+reChar: re.Pattern[str]
+reCharRange: re.Pattern[str]
 
-def charStringToList(chars): ...
-def normaliseCharList(charList): ...
+def charStringToList(chars: str) -> list[str]: ...
+def normaliseCharList(charList: Iterable[str]) -> list[str]: ...
 
-max_unicode: Any
+max_unicode: int
 
-def missingRanges(charList): ...
+def missingRanges(charList: Iterable[str]) -> list[str]: ...
 def listToRegexpStr(charList): ...
-def hexToInt(hex_str): ...
-def escapeRegexp(string): ...
+def hexToInt(hex_str: str | bytes | bytearray) -> int: ...
+def escapeRegexp(string: str) -> str: ...
 
-nonXmlNameBMPRegexp: Any
-nonXmlNameFirstBMPRegexp: Any
-nonPubidCharRegexp: Any
+nonXmlNameBMPRegexp: re.Pattern[str]
+nonXmlNameFirstBMPRegexp: re.Pattern[str]
+nonPubidCharRegexp: re.Pattern[str]
 
 class InfosetFilter:
-    replacementRegexp: Any
-    dropXmlnsLocalName: Any
-    dropXmlnsAttrNs: Any
-    preventDoubleDashComments: Any
-    preventDashAtCommentEnd: Any
-    replaceFormFeedCharacters: Any
-    preventSingleQuotePubid: Any
-    replaceCache: Any
+    replacementRegexp: re.Pattern[str]
+    dropXmlnsLocalName: Incomplete
+    dropXmlnsAttrNs: Incomplete
+    preventDoubleDashComments: Incomplete
+    preventDashAtCommentEnd: Incomplete
+    replaceFormFeedCharacters: Incomplete
+    preventSingleQuotePubid: Incomplete
+    replaceCache: Incomplete
     def __init__(
         self,
         dropXmlnsLocalName: bool = False,
diff --git a/stubs/html5lib/html5lib/_inputstream.pyi b/stubs/html5lib/html5lib/_inputstream.pyi
index 10759fad6cd5..cfd1b2f015c9 100644
--- a/stubs/html5lib/html5lib/_inputstream.pyi
+++ b/stubs/html5lib/html5lib/_inputstream.pyi
@@ -1,6 +1,6 @@
-from _typeshed import SupportsRead
+from _typeshed import Incomplete, SupportsRead
 from codecs import CodecInfo
-from typing import Any, Protocol, overload
+from typing import Protocol, overload
 from typing_extensions import TypeAlias
 
 # Is actually webencodings.Encoding
@@ -13,20 +13,20 @@ _UnicodeInputStream: TypeAlias = str | SupportsRead[str]
 _BinaryInputStream: TypeAlias = bytes | SupportsRead[bytes]
 _InputStream: TypeAlias = _UnicodeInputStream | _BinaryInputStream  # noqa: Y047  # used in other files
 
-spaceCharactersBytes: Any
-asciiLettersBytes: Any
-asciiUppercaseBytes: Any
-spacesAngleBrackets: Any
+spaceCharactersBytes: Incomplete
+asciiLettersBytes: Incomplete
+asciiUppercaseBytes: Incomplete
+spacesAngleBrackets: Incomplete
 invalid_unicode_no_surrogate: str
-invalid_unicode_re: Any
-non_bmp_invalid_codepoints: Any
-ascii_punctuation_re: Any
-charsUntilRegEx: Any
+invalid_unicode_re: Incomplete
+non_bmp_invalid_codepoints: Incomplete
+ascii_punctuation_re: Incomplete
+charsUntilRegEx: Incomplete
 
 class BufferedStream:
-    stream: Any
-    buffer: Any
-    position: Any
+    stream: Incomplete
+    buffer: Incomplete
+    position: Incomplete
     def __init__(self, stream) -> None: ...
     def tell(self): ...
     def seek(self, pos) -> None: ...
@@ -47,10 +47,10 @@ def HTMLInputStream(
 ) -> HTMLBinaryInputStream: ...
 
 class HTMLUnicodeInputStream:
-    reportCharacterErrors: Any
-    newLines: Any
+    reportCharacterErrors: Incomplete
+    newLines: Incomplete
     charEncoding: tuple[_Encoding, str]
-    dataStream: Any
+    dataStream: Incomplete
     def __init__(self, source: _UnicodeInputStream) -> None: ...
     chunk: str
     chunkSize: int
@@ -69,14 +69,14 @@ class HTMLUnicodeInputStream:
     def unget(self, char) -> None: ...
 
 class HTMLBinaryInputStream(HTMLUnicodeInputStream):
-    rawStream: Any
+    rawStream: Incomplete
     numBytesMeta: int
     numBytesChardet: int
-    override_encoding: Any
-    transport_encoding: Any
-    same_origin_parent_encoding: Any
-    likely_encoding: Any
-    default_encoding: Any
+    override_encoding: Incomplete
+    transport_encoding: Incomplete
+    same_origin_parent_encoding: Incomplete
+    likely_encoding: Incomplete
+    default_encoding: Incomplete
     charEncoding: tuple[_Encoding, str]
     def __init__(
         self,
@@ -88,7 +88,7 @@ class HTMLBinaryInputStream(HTMLUnicodeInputStream):
         default_encoding: str = "windows-1252",
         useChardet: bool = True,
     ) -> None: ...
-    dataStream: Any
+    dataStream: Incomplete
     def reset(self) -> None: ...
     def openStream(self, source): ...
     def determineEncoding(self, chardet: bool = True): ...
@@ -105,7 +105,7 @@ class EncodingBytes(bytes):
     def previous(self): ...
     def setPosition(self, position) -> None: ...
     def getPosition(self): ...
-    position: Any
+    position: Incomplete
     def getCurrentByte(self): ...
     @property
     def currentByte(self): ...
@@ -115,8 +115,8 @@ class EncodingBytes(bytes):
     def jumpTo(self, bytes): ...
 
 class EncodingParser:
-    data: Any
-    encoding: Any
+    data: Incomplete
+    encoding: Incomplete
     def __init__(self, data) -> None: ...
     def getEncoding(self): ...
     def handleComment(self): ...
@@ -128,7 +128,7 @@ class EncodingParser:
     def getAttribute(self): ...
 
 class ContentAttrParser:
-    data: Any
+    data: Incomplete
     def __init__(self, data) -> None: ...
     def parse(self): ...
 
diff --git a/stubs/html5lib/html5lib/_tokenizer.pyi b/stubs/html5lib/html5lib/_tokenizer.pyi
index e999fbcde4cf..22316b1112b5 100644
--- a/stubs/html5lib/html5lib/_tokenizer.pyi
+++ b/stubs/html5lib/html5lib/_tokenizer.pyi
@@ -1,20 +1,20 @@
-from typing import Any
+from _typeshed import Incomplete
 
 from ._inputstream import _InputStream
 
-entitiesTrie: Any
+entitiesTrie: Incomplete
 attributeMap = dict
 
 class HTMLTokenizer:
-    stream: Any
-    parser: Any
+    stream: Incomplete
+    parser: Incomplete
     escapeFlag: bool
-    lastFourChars: Any
-    state: Any
+    lastFourChars: Incomplete
+    state: Incomplete
     escape: bool
-    currentToken: Any
+    currentToken: Incomplete
     def __init__(self, stream: _InputStream, parser=None, **kwargs) -> None: ...
-    tokenQueue: Any
+    tokenQueue: Incomplete
     def __iter__(self): ...
     def consumeNumberEntity(self, isHex): ...
     def consumeEntity(self, allowedChar=None, fromAttribute: bool = False) -> None: ...
diff --git a/stubs/html5lib/html5lib/_trie/__init__.pyi b/stubs/html5lib/html5lib/_trie/__init__.pyi
index 7095d84cbea4..3b0ea9a093bf 100644
--- a/stubs/html5lib/html5lib/_trie/__init__.pyi
+++ b/stubs/html5lib/html5lib/_trie/__init__.pyi
@@ -1 +1,3 @@
 from .py import Trie as Trie
+
+__all__ = ["Trie"]
diff --git a/stubs/html5lib/html5lib/_trie/_base.pyi b/stubs/html5lib/html5lib/_trie/_base.pyi
index 7016028a2417..45725be511b6 100644
--- a/stubs/html5lib/html5lib/_trie/_base.pyi
+++ b/stubs/html5lib/html5lib/_trie/_base.pyi
@@ -1,8 +1,8 @@
+from _typeshed import Incomplete
 from abc import ABCMeta
 from collections.abc import Mapping
-from typing import Any
 
-class Trie(Mapping[Any, Any], metaclass=ABCMeta):
+class Trie(Mapping[Incomplete, Incomplete], metaclass=ABCMeta):
     def keys(self, prefix=None): ...
     def has_keys_with_prefix(self, prefix): ...
     def longest_prefix(self, prefix): ...
diff --git a/stubs/html5lib/html5lib/_utils.pyi b/stubs/html5lib/html5lib/_utils.pyi
index 7cc3edba3c64..f41afba04144 100644
--- a/stubs/html5lib/html5lib/_utils.pyi
+++ b/stubs/html5lib/html5lib/_utils.pyi
@@ -1,17 +1,27 @@
+import xml.etree.ElementTree as default_etree
+from _typeshed import Incomplete
 from collections.abc import Mapping
-from typing import Any
+
+__all__ = [
+    "default_etree",
+    "MethodDispatcher",
+    "isSurrogatePair",
+    "surrogatePairToCodepoint",
+    "moduleFactoryFactory",
+    "supports_lone_surrogates",
+]
 
 supports_lone_surrogates: bool
 
-class MethodDispatcher(dict[Any, Any]):
-    default: Any
+class MethodDispatcher(dict[Incomplete, Incomplete]):
+    default: Incomplete
     def __init__(self, items=()) -> None: ...
     def __getitem__(self, key): ...
     def __get__(self, instance, owner=None): ...
 
-class BoundMethodDispatcher(Mapping[Any, Any]):
-    instance: Any
-    dispatcher: Any
+class BoundMethodDispatcher(Mapping[Incomplete, Incomplete]):
+    instance: Incomplete
+    dispatcher: Incomplete
     def __init__(self, instance, dispatcher) -> None: ...
     def __getitem__(self, key): ...
     def get(self, key, default): ...  # type: ignore[override]
diff --git a/stubs/html5lib/html5lib/constants.pyi b/stubs/html5lib/html5lib/constants.pyi
index b8a3ac8f1cdd..a0e12fbff98e 100644
--- a/stubs/html5lib/html5lib/constants.pyi
+++ b/stubs/html5lib/html5lib/constants.pyi
@@ -1,37 +1,37 @@
-from typing import Any
+from _typeshed import Incomplete
 
-EOF: Any
-E: Any
-namespaces: Any
-scopingElements: Any
-formattingElements: Any
-specialElements: Any
-htmlIntegrationPointElements: Any
-mathmlTextIntegrationPointElements: Any
-adjustSVGAttributes: Any
-adjustMathMLAttributes: Any
-adjustForeignAttributes: Any
-unadjustForeignAttributes: Any
-spaceCharacters: Any
-tableInsertModeElements: Any
-asciiLowercase: Any
-asciiUppercase: Any
-asciiLetters: Any
-digits: Any
-hexDigits: Any
-asciiUpper2Lower: Any
-headingElements: Any
-voidElements: Any
-cdataElements: Any
-rcdataElements: Any
-booleanAttributes: Any
-entitiesWindows1252: Any
-xmlEntities: Any
-entities: Any
-replacementCharacters: Any
-tokenTypes: Any
-tagTokenTypes: Any
-prefixes: Any
+EOF: Incomplete
+E: dict[str, str]
+namespaces: dict[str, str]
+scopingElements: frozenset[tuple[str, str]]
+formattingElements: frozenset[tuple[str, str]]
+specialElements: frozenset[tuple[str, str]]
+htmlIntegrationPointElements: frozenset[tuple[str, str]]
+mathmlTextIntegrationPointElements: frozenset[tuple[str, str]]
+adjustSVGAttributes: dict[str, str]
+adjustMathMLAttributes: dict[str, str]
+adjustForeignAttributes: dict[str, tuple[str, str, str] | tuple[None, str, str]]
+unadjustForeignAttributes: dict[tuple[str, str], str]
+spaceCharacters: frozenset[str]
+tableInsertModeElements: frozenset[str]
+asciiLowercase: frozenset[str]
+asciiUppercase: frozenset[str]
+asciiLetters: frozenset[str]
+digits: frozenset[str]
+hexDigits: frozenset[str]
+asciiUpper2Lower: dict[int, int]
+headingElements: tuple[str, ...]
+voidElements: frozenset[str]
+cdataElements: frozenset[str]
+rcdataElements: frozenset[str]
+booleanAttributes: dict[str, frozenset[str]]
+entitiesWindows1252: tuple[int, ...]
+xmlEntities: frozenset[str]
+entities: dict[str, str]
+replacementCharacters: dict[int, str]
+tokenTypes: dict[str, int]
+tagTokenTypes: frozenset[int]
+prefixes: dict[str, str]
 
 class DataLossWarning(UserWarning): ...
 class _ReparseException(Exception): ...
diff --git a/stubs/html5lib/html5lib/filters/base.pyi b/stubs/html5lib/html5lib/filters/base.pyi
index 166f2040425e..82773fd9124f 100644
--- a/stubs/html5lib/html5lib/filters/base.pyi
+++ b/stubs/html5lib/html5lib/filters/base.pyi
@@ -1,7 +1,7 @@
-from typing import Any
+from _typeshed import Incomplete
 
 class Filter:
-    source: Any
+    source: Incomplete
     def __init__(self, source) -> None: ...
     def __iter__(self): ...
     def __getattr__(self, name: str): ...
diff --git a/stubs/html5lib/html5lib/filters/inject_meta_charset.pyi b/stubs/html5lib/html5lib/filters/inject_meta_charset.pyi
index 9cde8fde35bc..030cd63753df 100644
--- a/stubs/html5lib/html5lib/filters/inject_meta_charset.pyi
+++ b/stubs/html5lib/html5lib/filters/inject_meta_charset.pyi
@@ -1,8 +1,6 @@
-from typing import Any
-
 from . import base
 
 class Filter(base.Filter):
-    encoding: Any
-    def __init__(self, source, encoding) -> None: ...
+    encoding: str | None
+    def __init__(self, source, encoding: str | None) -> None: ...
     def __iter__(self): ...
diff --git a/stubs/html5lib/html5lib/filters/lint.pyi b/stubs/html5lib/html5lib/filters/lint.pyi
index 9aba9592a96f..39629c8696d6 100644
--- a/stubs/html5lib/html5lib/filters/lint.pyi
+++ b/stubs/html5lib/html5lib/filters/lint.pyi
@@ -1,8 +1,8 @@
-from typing import Any
-
 from . import base
 
+spaceCharacters: str
+
 class Filter(base.Filter):
-    require_matching_tags: Any
+    require_matching_tags: bool
     def __init__(self, source, require_matching_tags: bool = True) -> None: ...
     def __iter__(self): ...
diff --git a/stubs/html5lib/html5lib/filters/optionaltags.pyi b/stubs/html5lib/html5lib/filters/optionaltags.pyi
index 5d53a467e4a5..81045a0e068f 100644
--- a/stubs/html5lib/html5lib/filters/optionaltags.pyi
+++ b/stubs/html5lib/html5lib/filters/optionaltags.pyi
@@ -1,7 +1,10 @@
+from _typeshed import Incomplete
+from collections.abc import Generator
+
 from . import base
 
 class Filter(base.Filter):
-    def slider(self) -> None: ...
+    def slider(self) -> Generator[tuple[Incomplete, Incomplete, Incomplete]]: ...
     def __iter__(self): ...
-    def is_optional_start(self, tagname, previous, next): ...
-    def is_optional_end(self, tagname, next): ...
+    def is_optional_start(self, tagname: str, previous, next) -> bool: ...
+    def is_optional_end(self, tagname: str, next) -> bool: ...
diff --git a/stubs/html5lib/html5lib/filters/sanitizer.pyi b/stubs/html5lib/html5lib/filters/sanitizer.pyi
index 176e81a01796..7761f2719a5a 100644
--- a/stubs/html5lib/html5lib/filters/sanitizer.pyi
+++ b/stubs/html5lib/html5lib/filters/sanitizer.pyi
@@ -1,34 +1,51 @@
-from typing import Any
+import re
+from collections.abc import Iterable
+from typing_extensions import deprecated
 
 from . import base
 
+__all__ = ["Filter"]
+
+allowed_elements: frozenset[tuple[str, str]]
+allowed_attributes: frozenset[tuple[None, str] | tuple[str, str]]
+attr_val_is_uri: frozenset[tuple[None, str] | tuple[str, str]]
+svg_attr_val_allows_ref: frozenset[tuple[None, str]]
+svg_allow_local_href: frozenset[tuple[None, str]]
+allowed_css_properties: frozenset[str]
+allowed_css_keywords: frozenset[str]
+allowed_svg_properties: frozenset[str]
+allowed_protocols: frozenset[str]
+allowed_content_types: frozenset[str]
+data_content_type: re.Pattern[str]
+
+@deprecated("html5lib's sanitizer is deprecated; see https://github.com/html5lib/html5lib-python/issues/443")
 class Filter(base.Filter):
-    allowed_elements: Any
-    allowed_attributes: Any
-    allowed_css_properties: Any
-    allowed_css_keywords: Any
-    allowed_svg_properties: Any
-    allowed_protocols: Any
-    allowed_content_types: Any
-    attr_val_is_uri: Any
-    svg_attr_val_allows_ref: Any
-    svg_allow_local_href: Any
+    allowed_elements: Iterable[tuple[str | None, str]]
+    allowed_attributes: Iterable[tuple[str | None, str]]
+    allowed_css_properties: Iterable[str]
+    allowed_css_keywords: Iterable[str]
+    allowed_svg_properties: Iterable[str]
+    allowed_protocols: Iterable[str]
+    allowed_content_types: Iterable[str]
+    attr_val_is_uri: Iterable[tuple[str | None, str]]
+    svg_attr_val_allows_ref: Iterable[tuple[str | None, str]]
+    svg_allow_local_href: Iterable[tuple[str | None, str]]
     def __init__(
         self,
         source,
-        allowed_elements=...,
-        allowed_attributes=...,
-        allowed_css_properties=...,
-        allowed_css_keywords=...,
-        allowed_svg_properties=...,
-        allowed_protocols=...,
-        allowed_content_types=...,
-        attr_val_is_uri=...,
-        svg_attr_val_allows_ref=...,
-        svg_allow_local_href=...,
+        allowed_elements: Iterable[tuple[str | None, str]] = ...,
+        allowed_attributes: Iterable[tuple[str | None, str]] = ...,
+        allowed_css_properties: Iterable[str] = ...,
+        allowed_css_keywords: Iterable[str] = ...,
+        allowed_svg_properties: Iterable[str] = ...,
+        allowed_protocols: Iterable[str] = ...,
+        allowed_content_types: Iterable[str] = ...,
+        attr_val_is_uri: Iterable[tuple[str | None, str]] = ...,
+        svg_attr_val_allows_ref: Iterable[tuple[str | None, str]] = ...,
+        svg_allow_local_href: Iterable[tuple[str | None, str]] = ...,
     ) -> None: ...
     def __iter__(self): ...
     def sanitize_token(self, token): ...
     def allowed_token(self, token): ...
     def disallowed_token(self, token): ...
-    def sanitize_css(self, style): ...
+    def sanitize_css(self, style: str) -> str: ...
diff --git a/stubs/html5lib/html5lib/filters/whitespace.pyi b/stubs/html5lib/html5lib/filters/whitespace.pyi
index 117aaf6411a0..39f818100c7a 100644
--- a/stubs/html5lib/html5lib/filters/whitespace.pyi
+++ b/stubs/html5lib/html5lib/filters/whitespace.pyi
@@ -1,11 +1,12 @@
-from typing import Any
+import re
 
 from . import base
 
-SPACES_REGEX: Any
+spaceCharacters: str
+SPACES_REGEX: re.Pattern[str]
 
 class Filter(base.Filter):
-    spacePreserveElements: Any
+    spacePreserveElements: frozenset[str]
     def __iter__(self): ...
 
-def collapse_spaces(text): ...
+def collapse_spaces(text: str) -> str: ...
diff --git a/stubs/html5lib/html5lib/html5parser.pyi b/stubs/html5lib/html5lib/html5parser.pyi
index 2e38eaea5688..456fd35a5f0e 100644
--- a/stubs/html5lib/html5lib/html5parser.pyi
+++ b/stubs/html5lib/html5lib/html5parser.pyi
@@ -1,5 +1,5 @@
 from _typeshed import Incomplete
-from typing import Any, Literal, overload
+from typing import Literal, overload
 from xml.etree.ElementTree import Element
 
 from ._inputstream import _InputStream
@@ -18,18 +18,18 @@ def method_decorator_metaclass(function): ...
 
 class HTMLParser:
     strict: bool
-    tree: Any
+    tree: Incomplete
     errors: list[Incomplete]
-    phases: Any
+    phases: Incomplete
     def __init__(self, tree=None, strict: bool = False, namespaceHTMLElements: bool = True, debug: bool = False) -> None: ...
     firstStartTag: bool
-    log: Any
+    log: Incomplete
     compatMode: str
     container: str
-    innerHTML: Any
-    phase: Any
-    lastPhase: Any
-    beforeRCDataPhase: Any
+    innerHTML: Incomplete
+    phase: Incomplete
+    lastPhase: Incomplete
+    beforeRCDataPhase: Incomplete
     framesetOK: bool
     tokenizer: HTMLTokenizer
     def reset(self) -> None: ...
@@ -46,7 +46,7 @@ class HTMLParser:
     def adjustForeignAttributes(self, token) -> None: ...
     def reparseTokenNormal(self, token) -> None: ...
     def resetInsertionMode(self) -> None: ...
-    originalPhase: Any
+    originalPhase: Incomplete
     def parseRCDataRawtext(self, token, contentType) -> None: ...
 
 def getPhases(debug): ...
diff --git a/stubs/html5lib/html5lib/serializer.pyi b/stubs/html5lib/html5lib/serializer.pyi
index c17b2205ae43..e7232e2e1d11 100644
--- a/stubs/html5lib/html5lib/serializer.pyi
+++ b/stubs/html5lib/html5lib/serializer.pyi
@@ -1,6 +1,9 @@
 from _typeshed import Incomplete
 from collections.abc import Generator
-from typing import Any, overload
+from typing import overload
+
+k: str
+v: str | int
 
 def htmlentityreplace_errors(exc: Exception) -> tuple[str | bytes, int]: ...
 @overload
@@ -25,14 +28,14 @@ class HTMLSerializer:
     inject_meta_charset: bool
     strip_whitespace: bool
     sanitize: bool
-    options: Any
-    errors: Any
+    options: Incomplete
+    errors: Incomplete
     strict: bool
     def __init__(self, **kwargs) -> None: ...
     def encode(self, string): ...
     def encodeStrict(self, string): ...
-    encoding: Any
-    def serialize(self, treewalker, encoding=None) -> Generator[Incomplete, None, None]: ...
+    encoding: Incomplete
+    def serialize(self, treewalker, encoding=None) -> Generator[Incomplete]: ...
     def render(self, treewalker, encoding=None): ...
     def serializeError(self, data: str = "XXX ERROR MESSAGE NEEDED") -> None: ...
 
diff --git a/stubs/html5lib/html5lib/treeadapters/__init__.pyi b/stubs/html5lib/html5lib/treeadapters/__init__.pyi
index bf1267485d4b..49b1ebb296a2 100644
--- a/stubs/html5lib/html5lib/treeadapters/__init__.pyi
+++ b/stubs/html5lib/html5lib/treeadapters/__init__.pyi
@@ -1 +1,3 @@
 from . import genshi as genshi, sax as sax
+
+__all__ = ["sax", "genshi"]
diff --git a/stubs/html5lib/html5lib/treeadapters/sax.pyi b/stubs/html5lib/html5lib/treeadapters/sax.pyi
index 87ebcb1cb930..3ac32ef19361 100644
--- a/stubs/html5lib/html5lib/treeadapters/sax.pyi
+++ b/stubs/html5lib/html5lib/treeadapters/sax.pyi
@@ -1,5 +1,6 @@
-from typing import Any
-
-prefix_mapping: Any
+prefix: str | None
+localName: str
+namespace: str
+prefix_mapping: dict[str, str]
 
 def to_sax(walker, handler) -> None: ...
diff --git a/stubs/html5lib/html5lib/treebuilders/__init__.pyi b/stubs/html5lib/html5lib/treebuilders/__init__.pyi
index 703478287fe5..7fc1af410d92 100644
--- a/stubs/html5lib/html5lib/treebuilders/__init__.pyi
+++ b/stubs/html5lib/html5lib/treebuilders/__init__.pyi
@@ -1,5 +1,5 @@
-from typing import Any
+from typing import Literal
 
-treeBuilderCache: Any
+treeBuilderCache: dict[str, type]
 
-def getTreeBuilder(treeType, implementation=None, **kwargs): ...
+def getTreeBuilder(treeType: Literal["dom", "etree", "lxml"], implementation=None, **kwargs): ...
diff --git a/stubs/html5lib/html5lib/treebuilders/base.pyi b/stubs/html5lib/html5lib/treebuilders/base.pyi
index 577b92327b9c..59137fe3239f 100644
--- a/stubs/html5lib/html5lib/treebuilders/base.pyi
+++ b/stubs/html5lib/html5lib/treebuilders/base.pyi
@@ -1,15 +1,15 @@
-from typing import Any
+from _typeshed import Incomplete
 
-Marker: Any
-listElementsMap: Any
+Marker: Incomplete
+listElementsMap: dict[str | None, tuple[frozenset[tuple[str, str]], bool]]
 
 class Node:
-    name: Any
-    parent: Any
-    value: Any
-    attributes: Any
-    childNodes: Any
-    def __init__(self, name) -> None: ...
+    name: str
+    parent: Incomplete
+    value: Incomplete
+    attributes: Incomplete
+    childNodes: Incomplete
+    def __init__(self, name: str) -> None: ...
     def appendChild(self, node) -> None: ...
     def insertText(self, data, insertBefore=None) -> None: ...
     def insertBefore(self, node, refNode) -> None: ...
@@ -18,24 +18,24 @@ class Node:
     def cloneNode(self) -> None: ...
     def hasContent(self) -> None: ...
 
-class ActiveFormattingElements(list[Any]):
+class ActiveFormattingElements(list[Incomplete]):
     def append(self, node) -> None: ...
-    def nodesEqual(self, node1, node2): ...
+    def nodesEqual(self, node1, node2) -> bool: ...
 
 class TreeBuilder:
-    documentClass: Any
-    elementClass: Any
-    commentClass: Any
-    doctypeClass: Any
-    fragmentClass: Any
-    defaultNamespace: str
-    def __init__(self, namespaceHTMLElements) -> None: ...
-    openElements: Any
-    activeFormattingElements: Any
-    headPointer: Any
-    formPointer: Any
+    documentClass: Incomplete
+    elementClass: Incomplete
+    commentClass: Incomplete
+    doctypeClass: Incomplete
+    fragmentClass: Incomplete
+    defaultNamespace: str | None
+    def __init__(self, namespaceHTMLElements: bool | None) -> None: ...
+    openElements: Incomplete
+    activeFormattingElements: Incomplete
+    headPointer: Incomplete
+    formPointer: Incomplete
     insertFromTable: bool
-    document: Any
+    document: Incomplete
     def reset(self) -> None: ...
     def elementInScope(self, target, variant=None): ...
     def reconstructActiveFormattingElements(self) -> None: ...
@@ -52,4 +52,4 @@ class TreeBuilder:
     def generateImpliedEndTags(self, exclude=None) -> None: ...
     def getDocument(self): ...
     def getFragment(self): ...
-    def testSerializer(self, node) -> None: ...
+    def testSerializer(self, node): ...
diff --git a/stubs/html5lib/html5lib/treebuilders/dom.pyi b/stubs/html5lib/html5lib/treebuilders/dom.pyi
index 12de3344d248..d8049c383cf1 100644
--- a/stubs/html5lib/html5lib/treebuilders/dom.pyi
+++ b/stubs/html5lib/html5lib/treebuilders/dom.pyi
@@ -1,5 +1,7 @@
-from typing import Any
+from _typeshed import Incomplete
+from collections.abc import Callable
+from types import ModuleType
 
-def getDomBuilder(DomImplementation): ...
+def getDomBuilder(DomImplementation) -> dict[str, Incomplete]: ...
 
-getDomModule: Any
+getDomModule: Callable[..., ModuleType]
diff --git a/stubs/html5lib/html5lib/treebuilders/etree.pyi b/stubs/html5lib/html5lib/treebuilders/etree.pyi
index 948651dabd8c..b9dfabb88835 100644
--- a/stubs/html5lib/html5lib/treebuilders/etree.pyi
+++ b/stubs/html5lib/html5lib/treebuilders/etree.pyi
@@ -1,7 +1,10 @@
-from typing import Any
+import re
+from _typeshed import Incomplete
+from collections.abc import Callable
+from types import ModuleType
 
-tag_regexp: Any
+tag_regexp: re.Pattern[str]
 
-def getETreeBuilder(ElementTreeImplementation, fullTree: bool = False): ...
+def getETreeBuilder(ElementTreeImplementation, fullTree: bool = False) -> dict[str, Incomplete]: ...
 
-getETreeModule: Any
+getETreeModule: Callable[..., ModuleType]
diff --git a/stubs/html5lib/html5lib/treebuilders/etree_lxml.pyi b/stubs/html5lib/html5lib/treebuilders/etree_lxml.pyi
index 3bf5bea6481f..665eb117d358 100644
--- a/stubs/html5lib/html5lib/treebuilders/etree_lxml.pyi
+++ b/stubs/html5lib/html5lib/treebuilders/etree_lxml.pyi
@@ -1,15 +1,16 @@
-from typing import Any
+import re
+from _typeshed import Incomplete
 
 from . import base
 
 fullTree: bool
-tag_regexp: Any
-comment_type: Any
+tag_regexp: re.Pattern[str]
+comment_type: Incomplete
 
 class DocumentType:
-    name: Any
-    publicId: Any
-    systemId: Any
+    name: Incomplete
+    publicId: Incomplete
+    systemId: Incomplete
     def __init__(self, name, publicId, systemId) -> None: ...
 
 class Document:
@@ -18,21 +19,21 @@ class Document:
     @property
     def childNodes(self): ...
 
-def testSerializer(element): ...
-def tostring(element): ...
+def testSerializer(element) -> str: ...
+def tostring(element) -> str: ...
 
 class TreeBuilder(base.TreeBuilder):
-    documentClass: Any
-    doctypeClass: Any
-    elementClass: Any
-    commentClass: Any
-    fragmentClass: Any
-    implementation: Any
-    namespaceHTMLElements: Any
+    documentClass: Incomplete
+    doctypeClass: Incomplete
+    elementClass: Incomplete
+    commentClass: Incomplete
+    fragmentClass: Incomplete
+    implementation: Incomplete
+    namespaceHTMLElements: Incomplete
     def __init__(self, namespaceHTMLElements, fullTree: bool = False): ...
-    insertComment: Any
-    initial_comments: Any
-    doctype: Any
+    insertComment: Incomplete
+    initial_comments: Incomplete
+    doctype: Incomplete
     def reset(self) -> None: ...
     def testSerializer(self, element): ...
     def getDocument(self): ...
@@ -40,5 +41,5 @@ class TreeBuilder(base.TreeBuilder):
     def insertDoctype(self, token) -> None: ...
     def insertCommentInitial(self, data, parent=None) -> None: ...
     def insertCommentMain(self, data, parent=None) -> None: ...
-    document: Any
+    document: Incomplete
     def insertRoot(self, token) -> None: ...
diff --git a/stubs/html5lib/html5lib/treewalkers/__init__.pyi b/stubs/html5lib/html5lib/treewalkers/__init__.pyi
index 62d6f2a9f5fc..247912e69830 100644
--- a/stubs/html5lib/html5lib/treewalkers/__init__.pyi
+++ b/stubs/html5lib/html5lib/treewalkers/__init__.pyi
@@ -1,2 +1,7 @@
-def getTreeWalker(treeType, implementation=None, **kwargs): ...
-def pprint(walker): ...
+from types import ModuleType
+
+__all__ = ["getTreeWalker", "pprint"]
+
+def getTreeWalker(treeType: str, implementation: ModuleType | None = None, **kwargs): ...
+def concatenateCharacterTokens(tokens): ...
+def pprint(walker) -> str: ...
diff --git a/stubs/html5lib/html5lib/treewalkers/base.pyi b/stubs/html5lib/html5lib/treewalkers/base.pyi
index 3e6649735266..2ef37965b6d2 100644
--- a/stubs/html5lib/html5lib/treewalkers/base.pyi
+++ b/stubs/html5lib/html5lib/treewalkers/base.pyi
@@ -1,15 +1,18 @@
-from typing import Any
+from _typeshed import Incomplete
 
-DOCUMENT: Any
-DOCTYPE: Any
-TEXT: Any
-ELEMENT: Any
-COMMENT: Any
-ENTITY: Any
+__all__ = ["DOCUMENT", "DOCTYPE", "TEXT", "ELEMENT", "COMMENT", "ENTITY", "UNKNOWN", "TreeWalker", "NonRecursiveTreeWalker"]
+
+DOCUMENT: int
+DOCTYPE: int
+TEXT: int
+ELEMENT: int
+COMMENT: int
+ENTITY: int
 UNKNOWN: str
+spaceCharacters: str
 
 class TreeWalker:
-    tree: Any
+    tree: Incomplete
     def __init__(self, tree) -> None: ...
     def __iter__(self): ...
     def error(self, msg): ...
diff --git a/stubs/html5lib/html5lib/treewalkers/etree.pyi b/stubs/html5lib/html5lib/treewalkers/etree.pyi
index 33f6d800214f..94878061a818 100644
--- a/stubs/html5lib/html5lib/treewalkers/etree.pyi
+++ b/stubs/html5lib/html5lib/treewalkers/etree.pyi
@@ -1,7 +1,9 @@
-from typing import Any
+import re
+from collections.abc import Callable
+from types import ModuleType
 
-tag_regexp: Any
+tag_regexp: re.Pattern[str]
 
 def getETreeBuilder(ElementTreeImplementation): ...
 
-getETreeModule: Any
+getETreeModule: Callable[..., ModuleType]
diff --git a/stubs/html5lib/html5lib/treewalkers/etree_lxml.pyi b/stubs/html5lib/html5lib/treewalkers/etree_lxml.pyi
index 6ef2c48379f5..4071bb068650 100644
--- a/stubs/html5lib/html5lib/treewalkers/etree_lxml.pyi
+++ b/stubs/html5lib/html5lib/treewalkers/etree_lxml.pyi
@@ -1,40 +1,44 @@
-from typing import Any
+from _typeshed import Incomplete
+from typing import SupportsIndex, overload
 
 from .base import NonRecursiveTreeWalker
 
-def ensure_str(s): ...
+@overload
+def ensure_str(s: None) -> None: ...
+@overload
+def ensure_str(s: str | bytes | bytearray) -> str: ...
 
 class Root:
-    elementtree: Any
-    children: Any
-    text: Any
-    tail: Any
+    elementtree: Incomplete
+    children: list[Incomplete]
+    text: str | None
+    tail: str | None
     def __init__(self, et) -> None: ...
-    def __getitem__(self, key): ...
+    def __getitem__(self, key: SupportsIndex): ...
     def getnext(self) -> None: ...
     def __len__(self) -> int: ...
 
 class Doctype:
-    root_node: Any
-    name: Any
-    public_id: Any
-    system_id: Any
-    text: Any
-    tail: Any
+    root_node: Incomplete
+    name: Incomplete
+    public_id: Incomplete
+    system_id: Incomplete
+    text: Incomplete
+    tail: Incomplete
     def __init__(self, root_node, name, public_id, system_id) -> None: ...
     def getnext(self): ...
 
 class FragmentRoot(Root):
-    children: Any
-    text: Any
+    children: Incomplete
+    text: Incomplete
     def __init__(self, children) -> None: ...
     def getnext(self) -> None: ...
 
 class FragmentWrapper:
-    root_node: Any
-    obj: Any
-    text: Any
-    tail: Any
+    root_node: Incomplete
+    obj: Incomplete
+    text: Incomplete
+    tail: Incomplete
     def __init__(self, fragment_root, obj) -> None: ...
     def __getattr__(self, name: str): ...
     def getnext(self): ...
@@ -45,8 +49,8 @@ class FragmentWrapper:
     def __len__(self) -> int: ...
 
 class TreeWalker(NonRecursiveTreeWalker):
-    fragmentChildren: Any
-    filter: Any
+    fragmentChildren: Incomplete
+    filter: Incomplete
     def __init__(self, tree) -> None: ...
     def getNodeDetails(self, node): ...
     def getFirstChild(self, node): ...