diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index bb6ac7249..aa2a55c85 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,9 @@
-`Unreleased <https://github.com/pace-neutrons/Euphonic/compare/v0.6.3...HEAD>`_
+`Unreleased <https://github.com/pace-neutrons/Euphonic/compare/v0.6.4...HEAD>`_
 ----------
 
+`v0.6.4 <https://github.com/pace-neutrons/Euphonic/compare/v0.6.3...v0.6.4>`_
+------
+
 - Improvements:
 
   - The ``euphonic-dos``, ``euphonic-dispersion`` and
diff --git a/CITATION.cff b/CITATION.cff
index 905d121ed..ec33c48b1 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -25,8 +25,8 @@ authors:
     given-names: "D. J."
 title: "Euphonic"
 doi: "10.5286/SOFTWARE/EUPHONIC"
-version: "0.6.3"
-date-released: "2021-10-26"
+version: "0.6.4"
+date-released: "2022-03-01"
 license: "GPL-3.0-only"
 repository-code: "https://github.com/pace-neutrons/Euphonic"
 keywords: