diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 9d3862b7..00138348 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.2.0
+current_version = 1.2.1
 commit = True
 tag = True
 
diff --git a/HISTORY.md b/HISTORY.md
index b9104336..50d15591 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,12 @@
+1.2.1 / 2024-04-24
+------------------
+* pre-commit autoupdate (#191)
+* Fix the `data_kind` of `RecordsTruth` (#194)
+* Test full chain in multiple chunks and clean up input tests (#184)
+* Add a dtypes manager (#195)
+* Add pull_request_template.md (#197)
+* Scale S2 pattern map to correct S2 AFT (#196)
+
 1.2.0 / 2024-04-11
 ------------------
 * Specify lxml version (#185)
diff --git a/fuse/__init__.py b/fuse/__init__.py
index 65336f40..1b907ea5 100644
--- a/fuse/__init__.py
+++ b/fuse/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "1.2.0"
+__version__ = "1.2.1"
 
 from . import dtypes
 from .dtypes import *
diff --git a/fuse/plugins/micro_physics/input.py b/fuse/plugins/micro_physics/input.py
index 2012f329..fe0d6c28 100644
--- a/fuse/plugins/micro_physics/input.py
+++ b/fuse/plugins/micro_physics/input.py
@@ -271,7 +271,7 @@ def output_chunk(self):
         # Remove interactions that happen way after the run ended
         delay_cut = inter_reshaped["t"] <= self.cut_delayed
         log.info(
-            f"Removing {np.sum(~delay_cut)} ({np.sum(~delay_cut)/len(delay_cut):.4%}) "
+            f"Removing {np.sum(~delay_cut)} ({np.sum(~delay_cut) / len(delay_cut):.4%}) "
             f"interactions later than {self.cut_delayed:.2e} ns."
         )
         inter_reshaped = inter_reshaped[delay_cut]
diff --git a/pyproject.toml b/pyproject.toml
index 39208728..99936ce3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [tool]
 [tool.poetry]
 name = "xenon-fuse"
-version = "1.2.0"
+version = "1.2.1"
 description = "XENON Framework for Unified Simulations of Events"
 authors = [
   "Henning Schulze Eißing, <h_schu55@uni-muenster.de>",