diff --git a/.unicornfig.yml b/.unicornfig.yml
index 94648f6..4f20a5a 100644
--- a/.unicornfig.yml
+++ b/.unicornfig.yml
@@ -7,5 +7,5 @@ description: "This repository contains the original interface definitions of pub
   \ definitions can provide a better understanding of HPI Cloud APIs and help you\
   \ to utilize them more efficiently. You can also use these definitions with open\
   \ source tools to generate client libraries, documentation, and other artifacts."
-version: "0.0.11"
+version: "0.0.12"
 githubName: "HPI-de/hpi-cloud-apis"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9091748..fdf97ba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [0.0.12] - 2019-12-18
+### BREAKING CHANGES
+- **common, course, myhpi, news:** support different content types
+- **news:** normalize Article.categories, tags to IDs (repeated strings)
+
 ## [0.0.11] - 2019-10-06
 ### BREAKING CHANGES
 - **course:** add Course.attendance, enrollment_deadline; make CourseSeries.mandatory an enum
@@ -94,7 +99,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 Initial release with NewsService.
 
 
-[Unreleased]: https://github.com/HPI-de/hpi-cloud-apis/compare/0.0.11...dev
+[Unreleased]: https://github.com/HPI-de/hpi-cloud-apis/compare/0.0.12...dev
+[0.0.12]: https://github.com/HPI-de/hpi-cloud-apis/compare/0.0.11...0.0.12
 [0.0.11]: https://github.com/HPI-de/hpi-cloud-apis/compare/0.0.10...0.0.11
 [0.0.10]: https://github.com/HPI-de/hpi-cloud-apis/compare/0.0.9...0.0.10
 [0.0.9]: https://github.com/HPI-de/hpi-cloud-apis/compare/0.0.8...0.0.9
diff --git a/build.gradle b/build.gradle
index 2615ffe..4fe708d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,7 +35,7 @@ ext {
     githubReleaseNotes = 'CHANGELOG.md'
     allLicenses = ["Apache-2.0"]
 
-    libraryVersion = "0.0.11"
+    libraryVersion = "0.0.12"
 }
 
 task sourcesJar(type: Jar, dependsOn: classes) {