diff --git a/CHANGELOG.md b/CHANGELOG.md
index 829bb99a..0eb605ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,19 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
-## [1.2.1] - 2023-07-14
+## [1.2.0] - 2023-08-03
+
+### Fixed
+
+- Fixed that reference source are not recognized. Switched to use upper case values. #758
+
+- Fixed `generateIndex` that symlink was not created properly for GTF with `--gtf-symlink`.
+
+- Fixed matplotlib warning message #742
+
+- Fixed `parseVEP` that insertions not parsed successfully if the location is a single base. #766
+
+- Fixed `callVariant` that peptides with upstream cleavage altering mutations were not called. #670
 
 - Fixed fuzzTest to take multiple CPUs and use temporary directory.
 
@@ -26,20 +38,6 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 - Fixed callVariant that `fit_into_codon` terminated early in fusion transcripts when there donor has a frameshift and accepter has a variant right after the breakpoint. #786
 
-## [1.2.0] - 2023-07-04
-
-### Fixed
-
-- Fixed that reference source are not recognized. Switched to use upper case values. #758
-
-- Fixed `generateIndex` that symlink was not created properly for GTF with `--gtf-symlink`.
-
-- Fixed matplotlib warning message #742
-
-- Fixed `parseVEP` that insertions not parsed successfully if the location is a single base. #766
-
-- Fixed `callVariant` that peptides with upstream cleavage altering mutations were not called. #670
-
 ## [1.1.0] - 2023-06-28
 
 ### Fixed
diff --git a/moPepGen/__init__.py b/moPepGen/__init__.py
index 1faba5a4..fe28eba1 100644
--- a/moPepGen/__init__.py
+++ b/moPepGen/__init__.py
@@ -5,7 +5,7 @@
 from typing import Iterable, IO
 
 
-__version__ = '1.2.1'
+__version__ = '1.2.0'
 
 ## Error messages
 ERROR_INDEX_IN_INTRON = 'The genomic index seems to be in an intron'