diff --git a/src/block/table-of-contents/schema.js b/src/block/table-of-contents/schema.js
index f3abfaad2..037ee5953 100644
--- a/src/block/table-of-contents/schema.js
+++ b/src/block/table-of-contents/schema.js
@@ -148,6 +148,18 @@ export const attributes = ( version = VERSION ) => {
 		versionDeprecated: '',
 	} )
 
+	attrObject.add( {
+		attributes: {
+			scrollTopOffset: {
+				type: 'number',
+				default: '',
+				stkResponsive: true,
+			},
+		},
+		versionAdded: '3.19.3',
+		versionDeprecated: '',
+	} )
+
 	return attrObject.getMerged( version )
 }
 export default attributes( VERSION )
diff --git a/src/block/table-of-contents/style.js b/src/block/table-of-contents/style.js
index 41f3fbd96..1a6ed638e 100644
--- a/src/block/table-of-contents/style.js
+++ b/src/block/table-of-contents/style.js
@@ -121,7 +121,7 @@ blockStyles.addBlockStyles( 'isSmoothScroll', [ {
 	valueCallback: value => ( value ? 'smooth' : undefined ),
 } ] )
 
-blockStyles.addBlockStyle( 'scrollTopOffset', [ {
+blockStyles.addBlockStyles( 'scrollTopOffset', [ {
 	selector: 'html',
 	styleRule: 'scroll-padding-top',
 	attrName: 'scrollTopOffset',