diff --git a/docs/reference-guides/core-blocks.md b/docs/reference-guides/core-blocks.md
index 6c6879d36107a..e72987910d524 100644
--- a/docs/reference-guides/core-blocks.md
+++ b/docs/reference-guides/core-blocks.md
@@ -383,7 +383,7 @@ Show login & logout links. ([Source](https://github.com/WordPress/gutenberg/tree
 
 -	**Name:** core/loginout
 -	**Category:** theme
--	**Supports:** anchor, className, typography (~~fontSize~~)
+-	**Supports:** anchor, className, typography (fontSize, lineHeight)
 -	**Attributes:** displayLoginAsForm, redirectToCurrent
 
 ## Media & Text
diff --git a/packages/block-library/src/loginout/block.json b/packages/block-library/src/loginout/block.json
index aea0bb9e68840..3ba18dcf17143 100644
--- a/packages/block-library/src/loginout/block.json
+++ b/packages/block-library/src/loginout/block.json
@@ -21,7 +21,17 @@
 		"anchor": true,
 		"className": true,
 		"typography": {
-			"fontSize": false
+			"fontSize": true,
+			"lineHeight": true,
+			"__experimentalFontFamily": true,
+			"__experimentalFontWeight": true,
+			"__experimentalFontStyle": true,
+			"__experimentalTextTransform": true,
+			"__experimentalTextDecoration": true,
+			"__experimentalLetterSpacing": true,
+			"__experimentalDefaultControls": {
+				"fontSize": true
+			}
 		}
 	}
 }
diff --git a/packages/block-library/src/navigation/edit/inner-blocks.js b/packages/block-library/src/navigation/edit/inner-blocks.js
index 7ad9667bb98d9..e7296f386f5be 100644
--- a/packages/block-library/src/navigation/edit/inner-blocks.js
+++ b/packages/block-library/src/navigation/edit/inner-blocks.js
@@ -25,6 +25,7 @@ const ALLOWED_BLOCKS = [
 	'core/site-title',
 	'core/site-logo',
 	'core/navigation-submenu',
+	'core/loginout',
 ];
 
 const DEFAULT_BLOCK = {
diff --git a/packages/block-library/src/navigation/edit/unsaved-inner-blocks.js b/packages/block-library/src/navigation/edit/unsaved-inner-blocks.js
index bb23db9c3bc8d..2f302f5ec95bc 100644
--- a/packages/block-library/src/navigation/edit/unsaved-inner-blocks.js
+++ b/packages/block-library/src/navigation/edit/unsaved-inner-blocks.js
@@ -34,6 +34,7 @@ const ALLOWED_BLOCKS = [
 	'core/site-title',
 	'core/site-logo',
 	'core/navigation-submenu',
+	'core/loginout',
 ];
 
 export default function UnsavedInnerBlocks( {