diff --git a/.changeset/empty-geese-explain.md b/.changeset/empty-geese-explain.md
index 712955a5d..ca1ffc279 100644
--- a/.changeset/empty-geese-explain.md
+++ b/.changeset/empty-geese-explain.md
@@ -1,5 +1,6 @@
 ---
-'@guardian/source': minor
+'@guardian/source': major
 ---
 
-Adds `collapseUntil` option to `Inline` layout component to allow collapsing into a single column below a given breakpoint
+- Adds `collapseUntil` option to `Inline` layout component to allow collapsing into a single column below a given breakpoint.
+- Text and icons are now horizontally centred within buttons. Visually this is only apparent if a button's styles have been overridden and it is stretched beyond it's natural intrinsic width. (Previously the text and icon would be pushed to the edges of the button.)