diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64da801d..757421a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,13 +5,27 @@ 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).
 
+## [v4.26.0](https://github.com/puppetlabs/puppetlabs-puppet_agent/tree/v4.26.0) - 2025-10-28
+
+[Full Changelog](https://github.com/puppetlabs/puppetlabs-puppet_agent/compare/v4.25.0...v4.26.0)
+
+### Added
+
+- puppetlabs/apt: Allow 11.x [#810](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/810) ([bastelfreak](https://github.com/bastelfreak))
+- (PA-7407) Add more detailed error information when upgrade fails [#807](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/807) ([AriaXLi](https://github.com/AriaXLi))
+
+### Fixed
+
+- (PE-42492) Use dnf on fedora >= 41 [#806](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/806) ([joshcooper](https://github.com/joshcooper))
+- (CAT-2413) Install tasks require version to install on MacOS/Windows [#801](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/801) ([david22swan](https://github.com/david22swan))
+- (CAT-2413) Update `install_powershell.ps1` to generate the correct link [#796](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/796) ([david22swan](https://github.com/david22swan))
+
 ## [v4.25.0](https://github.com/puppetlabs/puppetlabs-puppet_agent/tree/v4.25.0) - 2025-07-14
 
 [Full Changelog](https://github.com/puppetlabs/puppetlabs-puppet_agent/compare/v4.24.0...v4.25.0)
 
 ### Other
 
-- (PA-7608) Update artifactory URL instead nightlies for yum source [#787](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/787) ([skyamgarp](https://github.com/skyamgarp))
 - Add puppetcore support for macOS [#784](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/784) ([joshcooper](https://github.com/joshcooper))
 - (PA-7433) Update task_spec to upgrade from puppet7 to latest puppet8 dev build [#783](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/783) ([AriaXLi](https://github.com/AriaXLi))
 - (PA-7196) Update the task acceptance tests for Redhat 10(x86_64) [#782](https://github.com/puppetlabs/puppetlabs-puppet_agent/pull/782) ([skyamgarp](https://github.com/skyamgarp))
diff --git a/REFERENCE.md b/REFERENCE.md
index 3f31a7ec..69ad419e 100644
--- a/REFERENCE.md
+++ b/REFERENCE.md
@@ -850,7 +850,7 @@ The version of puppet-agent to install (defaults to latest when no agent is inst
 
 ##### `collection`
 
-Data type: `Optional[Enum[puppet7, puppet8, puppet, puppet7-nightly, puppet8-nightly, puppet-nightly, puppetcore7, puppetcore8]]`
+Data type: `Optional[Enum[puppet7, puppet8, puppet, puppet7-nightly, puppet8-nightly, puppet-nightly, puppetcore7, puppetcore8, puppetcore8-nightly]]`
 
 The Puppet collection to install from (defaults to puppet, which maps to the latest collection released)
 
@@ -930,7 +930,7 @@ The version of puppet-agent to install
 
 ##### `collection`
 
-Data type: `Optional[Enum[puppet7, puppet8, puppet, puppet7-nightly, puppet8-nightly, puppet-nightly]]`
+Data type: `Optional[Enum[puppet7, puppet8, puppet, puppet7-nightly, puppet8-nightly, puppet-nightly, puppetcore7, puppetcore8, puppetcore8-nightly]]`
 
 The Puppet collection to install from (defaults to puppet, which maps to the latest collection released)
 
@@ -1010,7 +1010,7 @@ The version of puppet-agent to install
 
 ##### `collection`
 
-Data type: `Optional[Enum[puppet7, puppet8, puppet, puppet7-nightly, puppet8-nightly, puppet-nightly, puppetcore7, puppetcore8]]`
+Data type: `Optional[Enum[puppet7, puppet8, puppet, puppet7-nightly, puppet8-nightly, puppet-nightly, puppetcore7, puppetcore8, puppetcore8-nightly]]`
 
 The Puppet collection to install from (defaults to puppet, which maps to the latest collection released)
 
diff --git a/metadata.json b/metadata.json
index 9f448a8b..27f52b12 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,6 +1,6 @@
 {
   "name": "puppetlabs-puppet_agent",
-  "version": "4.25.0",
+  "version": "4.26.0",
   "author": "puppetlabs",
   "summary": "Upgrades All-In-One Puppet Agents",
   "license": "Apache-2.0",