diff --git a/CHANGELOG.md b/CHANGELOG.md
index 43ac8e7..8d7d036 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org).
 
+## [v4.2.0](https://github.com/osc/puppet-module-openondemand/tree/v4.2.0) (2023-09-19)
+
+[Full Changelog](https://github.com/osc/puppet-module-openondemand/compare/v4.1.0...v4.2.0)
+
+### Added
+
+- Refactor how cluster YAML is generated to stop using ERB template [\#137](https://github.com/OSC/puppet-module-openondemand/pull/137) ([treydock](https://github.com/treydock))
+
 ## [v4.1.0](https://github.com/osc/puppet-module-openondemand/tree/v4.1.0) (2023-06-16)
 
 [Full Changelog](https://github.com/osc/puppet-module-openondemand/compare/v4.0.0...v4.1.0)
diff --git a/REFERENCE.md b/REFERENCE.md
index 4a5b94d..f69c628 100644
--- a/REFERENCE.md
+++ b/REFERENCE.md
@@ -1318,11 +1318,11 @@ Default value: `false`
 
 ##### <a name="-openondemand--cluster--acls"></a>`acls`
 
-Data type: `Array[Openondemand::Acl]`
+Data type: `Optional[Array[Openondemand::Acl]]`
 
 
 
-Default value: `[]`
+Default value: `undef`
 
 ##### <a name="-openondemand--cluster--login_host"></a>`login_host`
 
@@ -1446,11 +1446,11 @@ Default value: `undef`
 
 ##### <a name="-openondemand--cluster--job_bin_overrides"></a>`job_bin_overrides`
 
-Data type: `Hash[String, Stdlib::Absolutepath]`
+Data type: `Optional[Hash[String, Stdlib::Absolutepath]]`
 
 
 
-Default value: `{}`
+Default value: `undef`
 
 ##### <a name="-openondemand--cluster--job_submit_host"></a>`job_submit_host`
 
@@ -1462,11 +1462,11 @@ Default value: `undef`
 
 ##### <a name="-openondemand--cluster--job_ssh_hosts"></a>`job_ssh_hosts`
 
-Data type: `Array[Stdlib::Host]`
+Data type: `Optional[Array[Stdlib::Host]]`
 
 
 
-Default value: `[]`
+Default value: `undef`
 
 ##### <a name="-openondemand--cluster--job_site_timeout"></a>`job_site_timeout`
 
@@ -1574,11 +1574,11 @@ Default value: `undef`
 
 ##### <a name="-openondemand--cluster--job_mounts"></a>`job_mounts`
 
-Data type: `Array[Openondemand::K8_mount]`
+Data type: `Optional[Array[Openondemand::K8_mount]]`
 
 
 
-Default value: `[]`
+Default value: `undef`
 
 ##### <a name="-openondemand--cluster--job_auth"></a>`job_auth`
 
@@ -1630,11 +1630,11 @@ Default value: `{}`
 
 ##### <a name="-openondemand--cluster--rsv_query_acls"></a>`rsv_query_acls`
 
-Data type: `Array[Openondemand::Acl]`
+Data type: `Optional[Array[Openondemand::Acl]]`
 
 
 
-Default value: `[]`
+Default value: `undef`
 
 ##### <a name="-openondemand--cluster--ganglia_host"></a>`ganglia_host`
 
@@ -1781,11 +1781,11 @@ Default value: `{}`
 
 ##### <a name="-openondemand--cluster--batch_connect"></a>`batch_connect`
 
-Data type: `Openondemand::Batch_connect`
+Data type: `Optional[Openondemand::Batch_connect]`
 
 
 
-Default value: `{}`
+Default value: `undef`
 
 ### <a name="openondemand--conf"></a>`openondemand::conf`
 
diff --git a/metadata.json b/metadata.json
index 72c824b..7dff740 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,6 +1,6 @@
 {
   "name": "osc-openondemand",
-  "version": "4.1.0",
+  "version": "4.2.0",
   "author": "osc",
   "summary": "Open OnDemand Puppet module",
   "license": "Apache-2.0",