diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index cfc64c0..1682d72 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.2.0
+current_version = 0.2.1
 files = axidence/__init__.py
 commit = True
 tag = True
diff --git a/HISTORY.md b/HISTORY.md
index 42a002c..db2a3f4 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,10 @@
+v0.2.1 / 2024-04-28
+-------------------
+* Use poetry by @dachengx in https://github.com/dachengx/axidence/pull/45
+
+**Full Changelog**: https://github.com/dachengx/axidence/compare/v0.2.0...v0.2.1
+
+
 v0.2.0 / 2024-04-27
 -------------------
 * Add `EventBuilding` cut by @dachengx in https://github.com/dachengx/axidence/pull/20
diff --git a/axidence/__init__.py b/axidence/__init__.py
index 5a1c9e0..93cf51e 100644
--- a/axidence/__init__.py
+++ b/axidence/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.2.0"
+__version__ = "0.2.1"
 
 from . import dtypes
 from .dtypes import *
diff --git a/pyproject.toml b/pyproject.toml
index e1bbdfa..3f42d8a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [tool]
 [tool.poetry]
 name = "axidence"
-version = "0.2.0"
+version = "0.2.1"
 description = "strax-based data-driven accidental coincidence background simulation and peak-level salting"
 readme = "README.md"
 license = "BSD-3-Clause"