diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 2ed3090017d46aaff0f5211eef33faf75ace5935..d88173e66d6906a464c46a3d4bebe8098b4f6e2c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,9 @@
 =========
 CHANGELOG
 =========
+- 1.2.1
+    Add functional tests
+
 - 1.2.0
     Input files can be gzipped
 
diff --git a/docs/conf.py b/docs/conf.py
index 76659d0398b1c0b66f6f20170ca9078d77eb0c1d..4f33d040370234d039fa05b3233314b58a72b180 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -26,7 +26,7 @@ author = 'Nicolas Maillet'
 # The short X.Y version
 version = ''
 # The full version, including alpha/beta/rc tags
-release = '1.2.0'
+release = '1.2.1'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/rpg/RapidPeptidesGenerator.py b/rpg/RapidPeptidesGenerator.py
index bc6fc7867b541ca40d3bf8127134ecfb2ef09b1b..0dace5f69271b8c50ef2323cb3e3b1b5e17d9609 100644
--- a/rpg/RapidPeptidesGenerator.py
+++ b/rpg/RapidPeptidesGenerator.py
@@ -29,7 +29,7 @@
 necessary functions
 """
 
-__version_info__ = ('1', '2', '0')
+__version_info__ = ('1', '2', '1')
 __version__ = '.'.join(__version_info__)
 __revision_date__ = "2021-02-03"
 __author__ = "Nicolas Maillet"
diff --git a/setup.py b/setup.py
index 5cf63e4edc4fa867554e55bd892a8c4daaad02e9..ed894e34e962ca3379608407c5164ecc16280d03 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@ setup(
     # For a discussion on single-sourcing the version across setup.py and the
     # project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='1.2.0',  # Required
+    version='1.2.1',  # Required
 
     # This is a one-line description or tagline of what your project does. This
     # corresponds to the "Summary" metadata field: