diff --git a/src/docs/releaseNotes/v1.8.1.md b/src/docs/releaseNotes/v1.8.1.md
index 8487e92..8498687 100644
--- a/src/docs/releaseNotes/v1.8.1.md
+++ b/src/docs/releaseNotes/v1.8.1.md
@@ -7,6 +7,7 @@ This release focuses on improving performance for map zooming and asset loading.
 - Default image assets have been further compressed to save on network bandwidth.
 - Browser compatibility has been expanded by supporting older browsers that didn't previously work with moving maps or interacting with dice.
 - Sending larger maps to players will no longer hitch the UI while the map is cached.
+- Using the fog brush tool has been optimised and is now less likely to result in small fog shapes on intersections.
 - Shared dice rolls now only show icons for the dice that have been rolled in the expanded view mode.
 - Holding down the Alt key while zooming will now activate a precision zoom mode, allowing mouse users to more precisely zoom maps.
 - The game reconnection message now has a more compact UI.