diff --git a/packages/components/CHANGELOG.md b/packages/components/CHANGELOG.md
index 94633ec707810..73f005b653841 100644
--- a/packages/components/CHANGELOG.md
+++ b/packages/components/CHANGELOG.md
@@ -17,6 +17,7 @@
 -   `MenuGroup`: Simplify the MenuGroup styles within dropdown menus. ([#65561](https://github.com/WordPress/gutenberg/pull/65561)).
 -   `DatePicker`: Use compact button size. ([#65653](https://github.com/WordPress/gutenberg/pull/65653)).
 -   `Navigator`: add support for exit animation ([#64777](https://github.com/WordPress/gutenberg/pull/64777)).
+-   `Guide`: Update finish button to use the new default size ([#65680](https://github.com/WordPress/gutenberg/pull/65680)).
 
 ## 28.8.0 (2024-09-19)
 
diff --git a/packages/components/src/guide/index.tsx b/packages/components/src/guide/index.tsx
index 0ca5957fd3a65..121c9f22330e8 100644
--- a/packages/components/src/guide/index.tsx
+++ b/packages/components/src/guide/index.tsx
@@ -164,6 +164,7 @@ function Guide( {
 							className="components-guide__finish-button"
 							variant="primary"
 							onClick={ onFinish }
+							__next40pxDefaultSize
 						>
 							{ finishButtonText }
 						</Button>