diff --git a/docs/reference-guides/core-blocks.md b/docs/reference-guides/core-blocks.md
index 9993087ba7d993..364b9a9b2a57c6 100644
--- a/docs/reference-guides/core-blocks.md
+++ b/docs/reference-guides/core-blocks.md
@@ -176,7 +176,7 @@ An advanced block that allows displaying post comments using different visual co
 
 -	**Name:** core/comments
 -	**Category:** theme
--	**Supports:** align (full, wide), color (background, gradients, link, text), ~~html~~
+-	**Supports:** align (full, wide), color (background, gradients, link, text), typography (fontSize, lineHeight), ~~html~~
 -	**Attributes:** legacy, tagName
 
 ## Comments Pagination
diff --git a/packages/block-library/src/comments/block.json b/packages/block-library/src/comments/block.json
index 042184b9b8d08d..59d315b5fcb83d 100644
--- a/packages/block-library/src/comments/block.json
+++ b/packages/block-library/src/comments/block.json
@@ -27,6 +27,19 @@
 				"text": true,
 				"link": true
 			}
+		},
+		"typography": {
+			"fontSize": true,
+			"lineHeight": true,
+			"__experimentalFontFamily": true,
+			"__experimentalFontWeight": true,
+			"__experimentalFontStyle": true,
+			"__experimentalTextTransform": true,
+			"__experimentalTextDecoration": true,
+			"__experimentalLetterSpacing": true,
+			"__experimentalDefaultControls": {
+				"fontSize": true
+			}
 		}
 	},
 	"editorStyle": "wp-block-comments-editor",