diff --git a/CHANGELOG.md b/CHANGELOG.md
index 950bca4b..8c9b9e3c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+unreleased
+==========
+
+## Bugfixes
+
+* Avoid overwriting the last coverage results on unsuccessful test runs. See [#625](https://github.com/colszowka/simplecov/pull/625) (thanks @thomas07vt)
+
 0.15.1 (2017-09-11) ([changes](https://github.com/colszowka/simplecov/compare/v0.15.0...v0.15.1))
 =======