diff --git a/.make b/.make
index 5af9b3e0ca97633f77ac472b43797a7d0f6bb60d..89355ba95132a004cb9c5367f48b92db88d31750 160000
--- a/.make
+++ b/.make
@@ -1 +1 @@
-Subproject commit 5af9b3e0ca97633f77ac472b43797a7d0f6bb60d
+Subproject commit 89355ba95132a004cb9c5367f48b92db88d31750
diff --git a/.release b/.release
index f39244167920ce09a84e22c843ce805fd5da3404..9702b52f1d7100651ad0cf0ec6c34d1e9d669d2a 100644
--- a/.release
+++ b/.release
@@ -1,2 +1,2 @@
-release=0.3.26
-tag=0.3.26
+release=0.4.0
+tag=0.4.0
diff --git a/charts/ska-tango-base/Chart.yaml b/charts/ska-tango-base/Chart.yaml
index c49d114f773905d0336aefebf61e118f8e01db96..6b84dbd8751a3fcb4dbd06dfbb3bf36f18cdf409 100644
--- a/charts/ska-tango-base/Chart.yaml
+++ b/charts/ska-tango-base/Chart.yaml
@@ -1,8 +1,8 @@
 apiVersion: v2
-appVersion: 0.3.23
 description: A Helm chart for deploying the TANGO base system on Kubernetes
 name: ska-tango-base
 version: 0.4.0
+appVersion: 0.4.0
 icon: https://www.skatelescope.org/wp-content/uploads/2016/07/09545_NEW_LOGO_2014.png
 dependencies:
 - name: ska-tango-util