diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 8ca81d02..33e35a5b 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.3.0
+current_version = 0.3.1
 files = setup.py appletree/__init__.py
 commit = True
 tag = True
diff --git a/HISTORY.md b/HISTORY.md
index f6061dd0..05af0d4f 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,21 @@
+v0.3.1 / 2024-01-12
+-------------------
+* Smarter SigmaMap handling and needed_parameters by @xzh19980906 in https://github.com/XENONnT/appletree/pull/116
+* Move messages of used parameter in `SigmaMap.build` by @dachengx in https://github.com/XENONnT/appletree/pull/117
+* Set required_parameter as method of Config by @dachengx in https://github.com/XENONnT/appletree/pull/119
+* Optional applying efficiency in `multiple_simulations` by @dachengx in https://github.com/XENONnT/appletree/pull/123
+* Fix S1/S2 correction and gas gain when simulating S1/S2PE by @mhliu0001 in https://github.com/XENONnT/appletree/pull/122
+* Prevent already cached functions from being changed by @dachengx in https://github.com/XENONnT/appletree/pull/125
+* Update docstring to google style by @dachengx in https://github.com/XENONnT/appletree/pull/126
+* Update conf, add napoleon by @dachengx in https://github.com/XENONnT/appletree/pull/127
+* Small bug fix when no llh_name is used by @dachengx in https://github.com/XENONnT/appletree/pull/129
+
+New Contributors
+* @mhliu0001 made their first contribution in https://github.com/XENONnT/appletree/pull/122
+
+**Full Changelog**: https://github.com/XENONnT/appletree/compare/v0.3.0...v0.3.1
+
+
 v0.3.0 / 2023-08-31
 -------------------
 * Fix function name to `simulate_weighted_data`, nothing else changed by @dachengx in https://github.com/XENONnT/appletree/pull/99
diff --git a/appletree/__init__.py b/appletree/__init__.py
index 7c4479b9..6589b272 100644
--- a/appletree/__init__.py
+++ b/appletree/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.3.0"
+__version__ = "0.3.1"
 
 # stop jax to preallocate memory
 import os
diff --git a/setup.py b/setup.py
index e8b82699..ccfd3f20 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ def open_requirements(path):
 
 setuptools.setup(
     name="appletree",
-    version="0.3.0",
+    version="0.3.1",
     description="A high-Performance Program simuLatEs and fiTs REsponse of xEnon.",
     author="Appletree contributors, the XENON collaboration",
     long_description=readme + "\n\n" + history,