diff --git a/pyproject.toml b/pyproject.toml
index b0aefd24..0c09974e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "kwja"
-version = "1.4.0"
+version = "1.4.1"
 description = "A unified language analyzer for Japanese"
 authors = [
     "Hirokazu Kiyomaru <kiyomaru@i.kyoto-u.ac.jp>",