diff --git a/docs/pages/release_notes.md b/docs/pages/release_notes.md
index d92379bfaa..61c3918dec 100644
--- a/docs/pages/release_notes.md
+++ b/docs/pages/release_notes.md
@@ -283,3 +283,4 @@ All existing rules have been updated to reflect these changes. If you have custo
 *   [#581](https://github.com/pmd/pmd/pull/581): \[java] Relax AbstractClassWithoutAnyMethod when class is annotated by @AutoValue - [Niklas Baudy](https://github.com/vanniktech)
 *   [#583](https://github.com/pmd/pmd/pull/583): \[java] Documentation about writing metrics - [Clément Fournier](https://github.com/oowekyala)
 *   [#585](https://github.com/pmd/pmd/pull/585): \[java] Moved NcssCountRule to codesize.xml - [Clément Fournier](https://github.com/oowekyala)
+*   [#588](https://github.com/pmd/pmd/pull/588): \[java] XPath function to compute metrics - [Clément Fournier](https://github.com/oowekyala)