diff --git a/CITATION.cff b/CITATION.cff
index b3769a3..9f66e3e 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -17,7 +17,7 @@ authors:
   given-names: "George"
   orcid: "https://orcid.org/0000-0002-8198-5790"
 title: "Harmony"
-version: 1.0.0
+version: 1.0.1
 doi: DOI 10.17605/OSF.IO/BCT6K
 date-released: 2023-07-22
 url: "https://harmonydata.ac.uk"
diff --git a/pyproject.toml b/pyproject.toml
index fffc3d8..c526aa4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "harmonydata"
-version = "1.0.0"
+version = "1.0.1"
 description = "Harmony Tool for Retrospective Data Harmonisation"
 readme = "README.md"
 keywords = [
diff --git a/src/harmony/__init__.py b/src/harmony/__init__.py
index a3eb19c..fbab39e 100644
--- a/src/harmony/__init__.py
+++ b/src/harmony/__init__.py
@@ -25,7 +25,7 @@
 
 '''
 
-__version__ = "0.5.3"
+__version__ = "1.0.1"
 
 # TODO: make these configurable at package level
 import os