diff --git a/.github/workflows/publish-docker-base-workflow.yaml b/.github/workflows/publish-docker-base-workflow.yaml
index 33e9fd7..75b9da4 100644
--- a/.github/workflows/publish-docker-base-workflow.yaml
+++ b/.github/workflows/publish-docker-base-workflow.yaml
@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
         with:
-          ref: 4.0.0
+          ref: main
       - uses: ./.github/actions/publish-docker-base-action
         env:
           SHINEOPENSOURCE_DOCKERHUB_TOKEN: ${{ secrets.SHINEOPENSOURCE_DOCKERHUB_TOKEN }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e7bc64..d2d34ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
 ## 4.0.0 - 2024-05-31
 ### Changed
 - Add GitHub workflows and rtk make targets
diff --git a/conf/ansible/inventory/group_vars/defaults.yaml b/conf/ansible/inventory/group_vars/defaults.yaml
index 10953e3..5bb0de4 100644
--- a/conf/ansible/inventory/group_vars/defaults.yaml
+++ b/conf/ansible/inventory/group_vars/defaults.yaml
@@ -3,6 +3,6 @@ docker:
   timezone: Australia/Melbourne
   image:
     name: aem-platform-buildenv
-    version: 4.0.0
+    version: 4.0.1-pre.0
 aws:
   region: overwrite-me