diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 819157a..e83da2d 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.3.0
+current_version = 0.3.1
 
 [comment]
 comment = The contents of this file cannot be merged with that of pyproject.toml until https://github.com/c4urself/bump2version/issues/42 is resolved
diff --git a/CITATION.cff b/CITATION.cff
index 452e340..8025a3e 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -39,7 +39,7 @@ authors:
     affiliation: "Netherlands eScience Center"
 
 date-released: 2022-09-02
-version: "0.3.0"
+version: "0.3.1"
 repository-code: "https://github.com/AI4S2S/lilio"
 keywords:
   - calendar
diff --git a/docs/conf.py b/docs/conf.py
index 3ee6539..ee570e7 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -26,7 +26,7 @@
 # built documents.
 #
 # The short X.Y version.
-version = "0.3.0"
+version = "0.3.1"
 # The full version, including alpha/beta/rc tags.
 release = version
 
diff --git a/lilio/__init__.py b/lilio/__init__.py
index 3d383e1..f00a7de 100644
--- a/lilio/__init__.py
+++ b/lilio/__init__.py
@@ -76,7 +76,7 @@
 
 __author__ = "Yang Liu"
 __email__ = "y.liu@esciencecenter.nl"
-__version__ = "0.3.0"
+__version__ = "0.3.1"
 
 __all__ = [
     "Calendar",