diff --git a/docs/content/Heading.md b/docs/content/Heading.md
index 3e71f224abf..c1efd4a7e84 100644
--- a/docs/content/Heading.md
+++ b/docs/content/Heading.md
@@ -19,4 +19,4 @@ Heading components get `TYPOGRAPHY` and `COMMON` system props. Read our [System
 
 | Prop name | Type    | Description                                      |
 | :-------- | :------ | :----------------------------------------------- |
-| as        | String  | sets the HTML tag for the component              |
+| as        | String or React element  | sets the HTML tag for the component              |
diff --git a/index.d.ts b/index.d.ts
index 61fbd30d03d..309e1b315b7 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -72,9 +72,7 @@ declare module '@primer/components' {
     extends BaseProps,
       CommonProps,
       TypographyProps,
-      Omit<React.HTMLAttributes<HTMLHeadingElement>, 'color'> {
-    as?: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'
-  }
+      Omit<React.HTMLAttributes<HTMLHeadingElement>, 'color'> { }
 
   export const Heading: React.FunctionComponent<HeadingProps>
 
@@ -303,7 +301,7 @@ declare module '@primer/components' {
   export interface SelectMenuModalProps extends CommonProps, Omit<React.HTMLAttributes<HTMLDivElement>, 'color'> {}
 
   export interface SelectMenuListProps extends CommonProps, Omit<React.HTMLAttributes<HTMLDivElement>, 'color'> {}
-  
+
   export interface SelectMenuItemProps extends Omit<CommonProps, 'as'>,
     Omit<React.AnchorHTMLAttributes<HTMLAnchorElement>, 'color'> {
     selected?: boolean
diff --git a/src/Heading.js b/src/Heading.js
index 424d3327572..aaf63fa0856 100644
--- a/src/Heading.js
+++ b/src/Heading.js
@@ -15,7 +15,6 @@ Heading.defaultProps = {
 }
 
 Heading.propTypes = {
-  as: PropTypes.oneOf(['h1', 'h2', 'h3', 'h4', 'h5', 'h6']),
   theme: PropTypes.object,
   ...COMMON.propTypes,
   ...TYPOGRAPHY.propTypes
diff --git a/src/__tests__/Heading.js b/src/__tests__/Heading.js
index 2540da192c0..60ca1de6e64 100644
--- a/src/__tests__/Heading.js
+++ b/src/__tests__/Heading.js
@@ -46,7 +46,7 @@ describe('Heading', () => {
     expect(Heading).toSetDefaultTheme()
   })
 
-  it('respects the is prop', () => {
+  it('respects the as prop', () => {
     expect(render(<Heading as="h6" />).type).toEqual('h6')
   })