diff --git a/howto/release/charts/voltha-openonu-adapter.rst b/howto/release/charts/voltha-openonu-adapter.rst
new file mode 100644
index 0000000..bd4ad85
--- /dev/null
+++ b/howto/release/charts/voltha-openonu-adapter.rst
@@ -0,0 +1,68 @@
+# Update Helm Chart for repo:votlha-openonu-adapter
+
+## HOWTO: Helm Chart Update
+
+- Update copyright notices :ref:`Release Task Copyright`
+- Update VOLTHA artifact and chart versions :ref:`Release Task Helm Charts`
+
+- Increment repository `VERSION file <https://gerrit.opencord.org/plugins/gitiles/voltha-openonu-adapter/+/refs/heads/master/VERSION>`_.  Build, test and deploy.
+- Modify repo:voltha-helm-charts
+
+  - Update component version in the component chart file.
+  - Update chart version for all charts dependent on the component chart.
+  - Run ``make lint-chart lint-helm`` to validate chart changes.
+  - chart:voltha, chart:voltha-infra and chart:voltha-stack can be confusing
+    due to a layer of indirection:
+
+    - chart:voltha-{infra,stack} are not not named for code repositories,
+      they are a container chart used to capture a list of dependencies
+      and versions.
+    - chart:voltha depends on these two charts which in turn depend on
+      sets of voltha components & versions.
+    - When ``make lint-chart`` report this error
+
+      - [ERROR] Chart modified but version unchanged: voltha/Chart.yaml (2.12.11)
+      - It will imply that a component like openonu-adapter has been updated
+        but chart:voltha and chart:voltha-{infra,stack} have not.
+
+.. list-table:: repo:voltha-helm-charts edits
+   :widths: 10, 20, 60
+   :header-rows: 1
+
+   * - Repository Path
+     - Key
+     - Description
+   * - `voltha-adapter-openonu/Chart.yaml <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha-adapter-openonu/Chart.yaml>`_
+     - Chart.yaml : appVersion
+     - Assign `repo:voltha-openonu-adapter::VERSION <https://gerrit.opencord.org/plugins/gitiles/voltha-openonu-adapter/+/refs/heads/master/VERSION>`_ to `Chart.yaml::appVersion <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha-adapter-openonu/Chart.yaml#35>`_
+   * - `voltha-adapter-openonu/Chart.yaml <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha-adapter-openonu/Chart.yaml>`_
+     - Chart.yaml : version
+     - Increment `ONU chart version <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha-adapter-openonu/Chart.yaml#17>`_
+
+   * - voltha-infra/Chart.yaml
+     -
+     -
+   * - voltha-stack/Chart.yaml
+     - dependencies : name=voltha-adapter-openonu :  version
+     - Component openonu-adapter modified so update `dependencies : name='voltha-adapter-onu' : version="2.12.2" <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha-stack/Chart.yaml#38>`_
+   * - voltha-stack/Chart.yaml
+     - Chart.yaml : version
+     - voltha-adapter-openonu/Chart.yaml modified so notify voltha-stack. Update `version="2.12.2" <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha-stack/Chart.yaml#30>`_.
+   * - voltha-stack/Chart.yaml
+     - dependency : name=voltha : version
+     - voltha-stack/Chart.yaml modified so notify chart voltha.  Update `dependencies : name=voltha : version="2.12.14" <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha-stack/Chart.yaml#34>`_
+   * - voltha/Chart.yaml
+     - Chart.yaml : version
+     - voltha/Chart.yaml updated so modify chart `Chart.yaml : version='"2.12.14"' <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha/Chart.yaml#17>`_
+   * - voltha/Chart.yaml
+     - Chart.yaml : version
+     - Update `voltha/Chart.yaml : version='"2.12.14"' <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha/Chart.yaml#17>`_ to match `voltha-stack:dependencies : name=voltha : version='"2.12.14"' <https://gerrit.opencord.org/plugins/gitiles/voltha-helm-charts/+/refs/heads/master/voltha/Chart.yaml#17>`_.
+
+### Extra Credit
+
+- Update copyright notices :ref:`Release Task Copyright`
+- make lint # lint everything
+
+.. seealso::
+
+`voltha-docs::charts <../charts/index>`