diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8bbb5b24b2..709d7748d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,21 @@
 # Changelog
 
+## [15.0.0](https://www.github.com/dasch-swiss/dsp-api/compare/v14.1.0...v15.0.0) (2021-09-14)
+
+
+### ⚠ BREAKING CHANGES
+
+* **ontology:** use patch instead of delete for deleting cardinalities (DSP-1700) (#1903)
+
+### Documentation
+
+* add username to changeable attributes (DSP-1895) ([#1904](https://www.github.com/dasch-swiss/dsp-api/issues/1904)) ([719cd0d](https://www.github.com/dasch-swiss/dsp-api/commit/719cd0dbfc60aae1c80d3b0e4e4ae09febe37791))
+
+
+### Maintenance
+
+* **ontology:** use patch instead of delete for deleting cardinalities (DSP-1700) ([#1903](https://www.github.com/dasch-swiss/dsp-api/issues/1903)) ([91ef4ec](https://www.github.com/dasch-swiss/dsp-api/commit/91ef4ec0a810ed347702bbe49b470505eb3c3067))
+
 ## [14.1.0](https://www.github.com/dasch-swiss/dsp-api/compare/v14.0.1...v14.1.0) (2021-08-19)
 
 
diff --git a/version.txt b/version.txt
index 7b3b6e02bb..94188a7483 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-14.1.0
+15.0.0