diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc481dbf..181cb012 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,19 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), with an added `List of PRs` section and links to the relevant PRs on the individal updates. This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased](https://github.com/askap-vast/vast-pipeline/compare/v3.1.1...HEAD)
+
+#### Added
+
+#### Changed
+
+#### Fixed
+
+#### Removed
+
+#### List of PRs
+
+
 ## [3.1.1](https://github.com/askap-vast/vast-tools/releases/v3.1.1) (2024-07-30)
 
 #### Added
diff --git a/pyproject.toml b/pyproject.toml
index b456899b..5a54da1a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "vasttools"
-version = "v3.1.0-dev"
+version = "3.1.1-dev"
 description = "Python module to interact with ASKAP VAST data."
 license = "MIT"
 homepage = "https://github.com/askap-vast/vasttools/"
diff --git a/vasttools/__init__.py b/vasttools/__init__.py
index 7ab62797..a66d5db4 100644
--- a/vasttools/__init__.py
+++ b/vasttools/__init__.py
@@ -9,7 +9,7 @@
 '''
 
 __author__ = 'Dougal Dobie, Adam Stewart'
-__version__ = "3.1.1"
+__version__ = "3.1.1-dev"
 
 
 RELEASED_EPOCHS = {