diff --git a/requirements.txt b/requirements.txt
index 3d9dfcc..e0177be 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ torch
 torchvision
 torchaudio
 unidecode
-pyopenjtalk==0.1.3
+pyopenjtalk-prebuilt
 jamo
 pypinyin
 jieba