diff --git a/doc/whatsnew.rst b/doc/whatsnew.rst
index ac7a361eb..cf41326f0 100644
--- a/doc/whatsnew.rst
+++ b/doc/whatsnew.rst
@@ -10,6 +10,7 @@ Next release
 - Update :doc:`/transport/index` (:pull:`213`).
 - Fix and update :doc:`/api/tools-costs` (:pull:`219`, :pull:`206`, :pull:`221`, :pull:`227`)
 - Fix and update :doc:`/api/tools-costs` (:pull:`219`, :pull:`206`, :pull:`221`)
+- Fix and update :doc:`/api/tools-costs` (:pull:`219`, :pull:`206`, :pull:`221`, :pull:`227`, :pull:`222`)
 
   - Fix naming of GDP and population columns in SSP data aggregation (:pull:`219`).
   - Edit inputs for storage, CSP, hydrogen, and industry technologies (:pull:`206`).
@@ -17,6 +18,7 @@ Next release
   - Reorganize input files and incorporate `first_year.csv` data into `tech_map.csv` (:pull:`221`).
   - Reconfigure use and implementation of technology variants/modules to be more agnostic (:pull:`221`).
   - Change cost decay to reach reduction percentage specified on the year 2100 (:pull:`227`).
+  - Add `cooling` technology variant/module (:pull:`222`).
 
 v2024.8.6
 =========