diff --git a/spacy/tokenizer.pxd b/spacy/tokenizer.pxd
index 44f6ee522..fa38a1015 100644
--- a/spacy/tokenizer.pxd
+++ b/spacy/tokenizer.pxd
@@ -23,8 +23,10 @@ cdef class Tokenizer:
     cdef object _infix_finditer
     cdef object _rules
     cdef PhraseMatcher _special_matcher
-    cdef int _property_init_count  # TODO: unused, remove in v3.1
-    cdef int _property_init_max    # TODO: unused, remove in v3.1
+    # TODO next two are unused and should be removed in v4
+    # https://github.com/explosion/spaCy/pull/9150
+    cdef int _unused_int1
+    cdef int _unused_int2
 
     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/vocab.pxd b/spacy/vocab.pxd
index 9b556247b..b28ad3e85 100644
--- a/spacy/vocab.pxd
+++ b/spacy/vocab.pxd
@@ -32,7 +32,7 @@ cdef class Vocab:
     cdef public object writing_system
     cdef public object get_noun_chunks
     cdef readonly int length
-    cdef public object data_dir
+    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 0a8ef6198..7c0d0598e 100644
--- a/spacy/vocab.pyi
+++ b/spacy/vocab.pyi
@@ -71,7 +71,7 @@ def unpickle_vocab(
     sstore: StringStore,
     vectors: Any,
     morphology: Any,
-    data_dir: 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 552898a98..402528f28 100644
--- a/spacy/vocab.pyx
+++ b/spacy/vocab.pyx
@@ -552,21 +552,21 @@ def pickle_vocab(vocab):
     sstore = vocab.strings
     vectors = vocab.vectors
     morph = vocab.morphology
-    data_dir = vocab.data_dir
+    _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, data_dir, lex_attr_getters, lookups, get_noun_chunks))
+            (sstore, vectors, morph, _unused_object, lex_attr_getters, lookups, get_noun_chunks))
 
 
-def unpickle_vocab(sstore, vectors, morphology, data_dir,
+def unpickle_vocab(sstore, vectors, morphology, _unused_object,
                    lex_attr_getters, lookups, get_noun_chunks):
     cdef Vocab vocab = Vocab()
     vocab.vectors = vectors
     vocab.strings = sstore
     vocab.morphology = morphology
-    vocab.data_dir = data_dir
+    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