diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e8c86b..29ceccf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,7 +23,7 @@ All significant changes to this project will be documented in this file.
 
 * T-Digest deserialization now rejects unknown or conflicting flags, reversed extrema, out-of-range values, unsorted centroids, and non-empty images without stored values.
 
-## v0.5.0
+## v0.5.0 (2026-09-04)
 
 ### Breaking changes