diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f8544bd..d769ee0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,7 +38,7 @@ RELEASING:
 12. Upload the package to https://plugins.qgis.org/plugins/ORStools/ (Manage > Add Version)
 13. Create new release in GitHub with tag version and release title of `vX.X.X`
  -->
-## [Unreleased]
+## [1.5.2] - 2022-01-20
 
 ## Fixed
 - error for layers with z/m values ([#166](https://github.com/GIScience/orstools-qgis-plugin/pull/166))
@@ -185,7 +185,8 @@ RELEASING:
 - first working version of ORS Tools, after replacing OSM Tools plugin
 
 
-[unreleased]: https://github.com/GIScience/orstools-qgis-plugin/compare/v1.5.1...HEAD
+[unreleased]: https://github.com/GIScience/orstools-qgis-plugin/compare/v1.5.2...HEAD
+[1.5.2]: https://github.com/GIScience/orstools-qgis-plugin/compare/v1.5.1...v1.5.2
 [1.5.1]: https://github.com/GIScience/orstools-qgis-plugin/compare/v1.5.0...v1.5.1
 [1.5.0]: https://github.com/GIScience/orstools-qgis-plugin/compare/v1.4.0...v1.5.0
 [1.4.0]: https://github.com/GIScience/orstools-qgis-plugin/compare/v1.3.0...v1.4.0
diff --git a/ORStools/metadata.txt b/ORStools/metadata.txt
index cb84f0d2..88723c7f 100644
--- a/ORStools/metadata.txt
+++ b/ORStools/metadata.txt
@@ -3,15 +3,15 @@ name=ORS Tools
 qgisMinimumVersion=3.4.8
 description=openrouteservice routing, isochrones and matrix calculations for QGIS
 
-version=1.5.1
+version=1.5.2
 author=HeiGIT gGmbH
 email=support@openrouteservice.heigit.org
 
 about=ORS Tools provides access to most of the functions of openrouteservice.org, based on OpenStreetMap. The tool set includes routing, isochrones and matrix calculations, either interactive in the map canvas or from point files within the processing framework. Extensive attributes are set for output files, incl. duration, length and start/end locations.
 
-changelog=2022/01/11 v1.5.1
+changelog=2022/01/20 v1.5.2
     Fixed:
-    - matrix algorithm parsing hidden options
+    - error for layers with z/m values
 
     Complete changelog of all versions: https://github.com/GIScience/orstools-qgis-plugin/blob/main/CHANGELOG.md
     Wiki: https://github.com/GIScience/orstools-qgis-plugin/wiki