diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36949fa54..15dd0fee5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,12 @@ Classify the change according to the following categories:
     ##### Removed
     ### Patches
 
+## Develop 2024-07-08
+#### Added
+- Added attribute `thermal_efficiency` to the arguments of http endpoint `chp_defaults`
+#### Fixed
+- See fixes and changes here: https://github.com/NREL/REopt.jl/releases/tag/v0.47.2
+
 ## v3.9.1
 ### Minor Updates
 #### Added