diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index ccf4b10..4c6fbf0 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,9 @@
 Changelog
 =========
 
+v0.5.2
+------
+
 - (`#40 <https://github.com/openscm/openscm-units/pull/40>`_) Fixed broken definition of ppm, caused by regression in Pint where `'ppm' was added to Pint <https://github.com/hgrecco/pint/pull/1661>`_
 
 v0.5.1