diff --git a/cupy_knn/_version.py b/cupy_knn/_version.py
index 3ced358..b5fdc75 100644
--- a/cupy_knn/_version.py
+++ b/cupy_knn/_version.py
@@ -1 +1 @@
-__version__ = "0.2.1"
+__version__ = "0.2.2"