diff --git a/CHANGELOG.md b/CHANGELOG.md
index cff72b6..a79c720 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## [v0.0.0](https://github.com/g-duff/optical_dispersion_relations/releases/v0.0.0)
+
 ### Added
 
 * Single pole Drude-Lorentz permittivity.