diff --git a/pyproject.toml b/pyproject.toml
index e0ee5aa..30be697 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-en = ["num2words", "spacy", "spacy-curated-transformers", "phonemizer-fork", "espeakng-loader", "torch", "transformers"]
+en = ["num2words", "spacy<4", "spacy-curated-transformers", "phonemizer-fork", "espeakng-loader", "torch", "transformers"]
 ja = ["fugashi", "jaconv", "mojimoji", "unidic", "pyopenjtalk"]
 ko = ["jamo", "nltk"]
 zh = ["jieba", "ordered-set", "pypinyin", "cn2an", "pypinyin-dict"]