diff --git a/spacy/tests/serialize/test_serialize_vocab_strings.py b/spacy/tests/serialize/test_serialize_vocab_strings.py
index 3cfcb5974..325245a25 100644
--- a/spacy/tests/serialize/test_serialize_vocab_strings.py
+++ b/spacy/tests/serialize/test_serialize_vocab_strings.py
@@ -192,8 +192,10 @@ def test_pickle_vocab(strings, lex_attr):
     ops = get_current_ops()
     vectors = Vectors(data=ops.xp.zeros((10, 10)), mode="floret", hash_count=1)
     vocab.vectors = vectors
+    vocab.lex_attr_data = {"a": 1}
     vocab[strings[0]].norm_ = lex_attr
     vocab_pickled = pickle.dumps(vocab)
     vocab_unpickled = pickle.loads(vocab_pickled)
     assert vocab.to_bytes() == vocab_unpickled.to_bytes()
     assert vocab_unpickled.vectors.mode == "floret"
+    assert vocab_unpickled.lex_attr_data == vocab.lex_attr_data
diff --git a/spacy/vocab.pyx b/spacy/vocab.pyx
index 215d0ab95..d62cf71e3 100644
--- a/spacy/vocab.pyx
+++ b/spacy/vocab.pyx
@@ -556,18 +556,20 @@ def pickle_vocab(vocab):
     vectors = vocab.vectors
     morph = vocab.morphology
     lex_attr_getters = srsly.pickle_dumps(vocab.lex_attr_getters)
+    lex_attr_data = vocab.lex_attr_data
     lookups = vocab.lookups
     get_noun_chunks = vocab.get_noun_chunks
     return (unpickle_vocab,
-            (sstore, vectors, morph, lex_attr_getters, lookups, get_noun_chunks))
+            (sstore, vectors, morph, lex_attr_getters, lex_attr_data, lookups, get_noun_chunks))
 
 
-def unpickle_vocab(sstore, vectors, morphology, lex_attr_getters, lookups, get_noun_chunks):
+def unpickle_vocab(sstore, vectors, morphology, lex_attr_getters, lex_attr_data, lookups, get_noun_chunks):
     cdef Vocab vocab = Vocab()
     vocab.vectors = vectors
     vocab.strings = sstore
     vocab.morphology = morphology
     vocab.lex_attr_getters = srsly.pickle_loads(lex_attr_getters)
+    vocab.lex_attr_data = lex_attr_data
     vocab.lookups = lookups
     vocab.get_noun_chunks = get_noun_chunks
     return vocab