diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9458f1b..31a9250 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,40 +1,51 @@
+## 2018-07-02 - Release 2.2.1
+
+### Summary
+
+The module has been converted to Puppet PDK and has been tested on Ubuntu 18.04.
+
+#### Features
+
+- Add Ubuntu 18.04 (Bionic Beaver) to the list of supported operating systems.
+- Convert to Puppet PDK.
+
 ## 2018-05-08 - Release 2.2.0
 
 ### Summary
 
 This release adds the possibility to manage the seen flag for a debconf configuration item.
 
 #### Features
 
 - The type has a new `seen` parameter to define the value of the seen flag for an item. Setting this parameter to a boolean value will set the flag to the specified value. Leaving this parameter undefined will retain the old behavior.
 
 ## 2018-02-04 - Release 2.1.0
 
 ### Summary
 
 This release removes support for some legacy OS releases and closes a bug.
 
 #### Bugfixes
 
 - Fix a bug where a pipe to a subprocess was closed too late. This caused a subprocess to become a zombie until the Puppet run finished.
 
 ## 2017-03-10 - Release 2.0.0
 
 ### Summary
 
 This release no longer allows the `type` parameter to be empty when creating the resource. It also includes an important fix to correctly detect if a defined password needs to be updated.
 
 #### Features
 
 - Added Ubuntu 16.10 (Yakkety Yak) to the list of supported operating systems.
 
 #### Bugfixes
 
 - Added an additional validation for the `type` parameter. This effectively makes the parameter mandatory for `ensure => present`. The type of the entry is required when the entry is missing in the debconf database and has to be created.
 - Fix a bug that prevented reading a preseeded password correctly. Previously a password item would trigger a resource update with every Puppet run.
 
 ## 2016-05-13 - Release 1.0.0
 
 ### Summary
 
 Initial release.
diff --git a/metadata.json b/metadata.json
index 0f5bf77..5a2237b 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,44 +1,44 @@
 {
   "name": "stm-debconf",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "author": "stm",
   "summary": "Manage debconf database items on Debian based systems.",
   "license": "BSD-2-Clause",
   "source": "https://github.com/smoeding/puppet-debconf",
   "project_page": "https://github.com/smoeding/puppet-debconf",
   "issues_url": "https://github.com/smoeding/puppet-debconf/issues",
   "dependencies": [
 
   ],
   "operatingsystem_support": [
     {
       "operatingsystem": "Debian",
       "operatingsystemrelease": [
         "7",
         "8",
         "9"
       ]
     },
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
         "14.04",
         "16.04",
         "17.10",
         "18.04"
       ]
     }
   ],
   "requirements": [
     {
       "name": "puppet",
       "version_requirement": ">= 3.0.0 < 6.0.0"
     }
   ],
   "tags": [
     "debconf"
   ],
   "pdk-version": "1.6.0",
   "template-url": "https://github.com/puppetlabs/pdk-templates",
   "template-ref": "heads/master-0-gc87eee3"
 }