diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e0f65ce1..5dd7fe962 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file. The format
 on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/). Each changelog entry gets prefixed with the category of the
 item (Added, Changed, Depreciated, Removed, Fixed, Security).
 
+## [2026.03]
+
+- Added: The core Heading block now contains an "Overline" style that's consistent with the style guide.
+
 ## [2026.02]
 - Added: `moderntribe/tribe_embed` composer package v1.1.0.
 - Updated: Renamed "Moose" to "ModernPress" across the project (excluding Lando configs and deployment pipelines).
diff --git a/wp-content/themes/core/styles/blocks/heading/70-overline.json b/wp-content/themes/core/styles/blocks/heading/70-overline.json
new file mode 100644
index 000000000..48ecd389d
--- /dev/null
+++ b/wp-content/themes/core/styles/blocks/heading/70-overline.json
@@ -0,0 +1,15 @@
+{
+	"$schema": "https://schemas.wp.org/trunk/theme.json",
+	"version": 3,
+	"slug": "overline",
+	"title": "Overline",
+	"blockTypes": [ "core/heading" ],
+	"styles": {
+		"typography": {
+			"fontFamily": "var(--wp--preset--font-family--inter)",
+			"fontSize": "var(--wp--preset--font-size--20)",
+			"lineHeight": "1.6",
+			"fontWeight": "var(--wp--custom--font-weight--bold)"
+		}
+	}
+}