diff --git a/CHANGELOG.md b/CHANGELOG.md
index 333e2d0a..e3258fae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,12 @@
 # Changelog
 
-## [«unknown»](https://github.com/NASA-PDS/pds4-information-model/tree/«unknown») (2024-11-08)
+## [release/15.2.1](https://github.com/NASA-PDS/pds4-information-model/tree/release/15.2.1) (2024-11-09)
 
-[Full Changelog](https://github.com/NASA-PDS/pds4-information-model/compare/v15.1.0...«unknown»)
+[Full Changelog](https://github.com/NASA-PDS/pds4-information-model/compare/release/15.2.0...release/15.2.1)
+
+## [release/15.2.0](https://github.com/NASA-PDS/pds4-information-model/tree/release/15.2.0) (2024-11-08)
+
+[Full Changelog](https://github.com/NASA-PDS/pds4-information-model/compare/v15.1.0...release/15.2.0)
 
 **Requirements:**