diff --git a/pyproject.toml b/pyproject.toml
index 44159f8d..f72ac64c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "laptrack"
-version = "0.8.0"
+version = "0.9.0"
 description = "LapTrack"
 authors = ["Yohsuke Fukai <ysk@yfukai.net>"]
 license = "BSD-3-Clause"