diff --git a/spacy/tokenizer.pxd b/spacy/tokenizer.pxd
index a902ebad941..f64e0e93413 100644
--- a/spacy/tokenizer.pxd
+++ b/spacy/tokenizer.pxd
@@ -23,11 +23,7 @@ cdef class Tokenizer:
     cdef object _infix_finditer
     cdef object _rules
     cdef PhraseMatcher _special_matcher
-    # TODO convert to bool in v4
-    cdef int _faster_heuristics
-    # TODO next one is unused and should be removed in v4
-    # https://github.com/explosion/spaCy/pull/9150
-    cdef int _unused_int2
+    cdef bint _faster_heuristics
 
     cdef Doc _tokenize_affixes(self, str string, bint with_special_cases)
     cdef int _apply_special_cases(self, Doc doc) except -1
diff --git a/spacy/tokenizer.pyx b/spacy/tokenizer.pyx
index c95392a2026..9b79207f82e 100644
--- a/spacy/tokenizer.pyx
+++ b/spacy/tokenizer.pyx
@@ -8,11 +8,18 @@ from libcpp.set cimport set as stdset
 from preshed.maps cimport PreshMap
 
 import re
+
+from .tokens.doc cimport Doc
+from .strings cimport hash_string
 from .lexeme cimport EMPTY_LEXEME
 from .strings cimport hash_string
 from .tokens.doc cimport Doc
 
+from .attrs import intify_attrs
+from .symbols import ORTH, NORM
+from .errors import Errors
 from . import util
+from .util import get_words_and_spaces
 from .attrs import intify_attrs
 from .errors import Errors
 from .scorer import Scorer
@@ -124,10 +131,10 @@ cdef class Tokenizer:
 
     property faster_heuristics:
         def __get__(self):
-            return bool(self._faster_heuristics)
+            return self._faster_heuristics
 
         def __set__(self, faster_heuristics):
-            self._faster_heuristics = bool(faster_heuristics)
+            self._faster_heuristics = faster_heuristics
             self._reload_special_cases()
 
     def __reduce__(self):
diff --git a/spacy/vocab.pxd b/spacy/vocab.pxd
index 43e47af1dee..b91ce3ab45b 100644
--- a/spacy/vocab.pxd
+++ b/spacy/vocab.pxd
@@ -32,7 +32,6 @@ cdef class Vocab:
     cdef public object writing_system
     cdef public object get_noun_chunks
     cdef readonly int length
-    cdef public object _unused_object  # TODO remove in v4, see #9150
     cdef public object lex_attr_getters
     cdef public object cfg
 
diff --git a/spacy/vocab.pyi b/spacy/vocab.pyi
index b7ff20348a0..7f5f23e7847 100644
--- a/spacy/vocab.pyi
+++ b/spacy/vocab.pyi
@@ -73,7 +73,6 @@ def unpickle_vocab(
     sstore: StringStore,
     vectors: Any,
     morphology: Any,
-    _unused_object: Any,
     lex_attr_getters: Any,
     lookups: Any,
     get_noun_chunks: Any,
diff --git a/spacy/vocab.pyx b/spacy/vocab.pyx
index c03226e2467..834f21c35dc 100644
--- a/spacy/vocab.pyx
+++ b/spacy/vocab.pyx
@@ -579,21 +579,18 @@ def pickle_vocab(vocab):
     sstore = vocab.strings
     vectors = vocab.vectors
     morph = vocab.morphology
-    _unused_object = vocab._unused_object
     lex_attr_getters = srsly.pickle_dumps(vocab.lex_attr_getters)
     lookups = vocab.lookups
     get_noun_chunks = vocab.get_noun_chunks
     return (unpickle_vocab,
-            (sstore, vectors, morph, _unused_object, lex_attr_getters, lookups, get_noun_chunks))
+            (sstore, vectors, morph, lex_attr_getters, lookups, get_noun_chunks))
 
 
-def unpickle_vocab(sstore, vectors, morphology, _unused_object,
-                   lex_attr_getters, lookups, get_noun_chunks):
+def unpickle_vocab(sstore, vectors, morphology, lex_attr_getters, lookups, get_noun_chunks):
     cdef Vocab vocab = Vocab()
     vocab.vectors = vectors
     vocab.strings = sstore
     vocab.morphology = morphology
-    vocab._unused_object = _unused_object
     vocab.lex_attr_getters = srsly.pickle_loads(lex_attr_getters)
     vocab.lookups = lookups
     vocab.get_noun_chunks = get_noun_chunks