diff --git a/pyproject.toml b/pyproject.toml
index 91877c9f..e6d79fc3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "rhoknp"
-version = "1.2.1"
+version = "1.2.2"
 description = "Yet another Python binding for Juman++/KNP/KWJA"
 license = "MIT"
 authors = [