diff --git a/CHANGELOG.md b/CHANGELOG.md
index a5e65685..aa969d15 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,8 @@ will consitute of a breaking change warranting a new major release:
 - STR missed reply handling is now moved to DHB rather than the COM interface. The COM IF will
   still trigger an event if a reply is taking too long, and FDIR should still work via reply
   timeouts.
+- Rad sensor is now only polled every 30 minutes instead of every device cycle to reduce wear of
+  the RADFET electronics.
 
 ## Added