diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 85f825a..ee26c1a 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -2,6 +2,13 @@
 CHANGELOG
 =========
 
+-------------------------------------------------------------------------------
+February, 05, 2024 1.2.1
+-------------------------------------------------------------------------------
+
+Minor:
+- Replaced NoReturn type hinting with None - thank you @SaraEkmanSVT
+
 -------------------------------------------------------------------------------
 August, 16, 2023 1.2.0
 -------------------------------------------------------------------------------
diff --git a/mab2rec/_version.py b/mab2rec/_version.py
index d7b0b11..d4fa509 100644
--- a/mab2rec/_version.py
+++ b/mab2rec/_version.py
@@ -4,5 +4,5 @@
 
 __author__ = "FMR LLC"
 __email__ = "opensource@fmr.com"
-__version__ = "1.2.0"
+__version__ = "1.2.1"
 __copyright__ = "Copyright (C), FMR LLC"