diff --git a/.changeset/fluffy-peaches-study.md b/.changeset/fluffy-peaches-study.md
new file mode 100644
index 00000000000..f909526645f
--- /dev/null
+++ b/.changeset/fluffy-peaches-study.md
@@ -0,0 +1,5 @@
+---
+"@primer/components": patch
+---
+
+Migrate `Heading` to TypeScript
diff --git a/.github/ISSUE_TEMPLATE/new_component_proposal_template.md b/.github/ISSUE_TEMPLATE/new_component_proposal_template.md
index 3b3773284c8..7d088e2e8a2 100644
--- a/.github/ISSUE_TEMPLATE/new_component_proposal_template.md
+++ b/.github/ISSUE_TEMPLATE/new_component_proposal_template.md
@@ -1,3 +1,9 @@
+---
+name: Component Proposal
+about: Propose a new component
+
+---
+
 ## Description
 Please describe the proposed component as thoroughly as possible - including Figma links for design, screenshots, historical context, any required functionality, optional/nice to have functionality, proposed component API design, etc. The more detail the better!
 
diff --git a/package.json b/package.json
index 7312f88f7a3..e51efd517e5 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "@styled-system/props": "5.1.4",
     "@styled-system/theme-get": "5.1.2",
     "@types/styled-components": "^4.4.0",
-    "@types/styled-system": "5.1.2",
+    "@types/styled-system": "5.1.10",
     "@types/styled-system__css": "5.0.14",
     "@types/styled-system__theme-get": "5.0.1",
     "classnames": "^2.2.5",
diff --git a/src/Heading.js b/src/Heading.tsx
similarity index 60%
rename from src/Heading.js
rename to src/Heading.tsx
index 01a93cb7f0e..30cc12f5da9 100644
--- a/src/Heading.js
+++ b/src/Heading.tsx
@@ -1,10 +1,10 @@
 import styled from 'styled-components'
-import sx from './sx'
+import sx, {SxProp} from './sx'
 import PropTypes from 'prop-types'
-import {TYPOGRAPHY, COMMON, get} from './constants'
+import {TYPOGRAPHY, COMMON, get, SystemTypographyProps, SystemCommonProps} from './constants'
 import theme from './theme'
 
-const Heading = styled.h2`
+const Heading = styled.h2<SystemTypographyProps & SystemCommonProps & SxProp>`
   font-weight: ${get('fontWeights.bold')};
   font-size: ${get('fontSizes.5')};
   margin: 0;
@@ -24,4 +24,5 @@ Heading.propTypes = {
   ...TYPOGRAPHY.propTypes
 }
 
+export type HeadingProps = React.ComponentProps<typeof Heading>
 export default Heading
diff --git a/src/__tests__/Heading.js b/src/__tests__/Heading.tsx
similarity index 66%
rename from src/__tests__/Heading.js
rename to src/__tests__/Heading.tsx
index 57f3ffe3fe3..2837621e1a6 100644
--- a/src/__tests__/Heading.js
+++ b/src/__tests__/Heading.tsx
@@ -80,10 +80,6 @@ describe('Heading', () => {
     expect(render(<Heading fontFamily="mono" theme={theme} />)).toHaveStyleRule('font-family', theme.fonts.mono)
   })
 
-  it.skip('respects nowrap', () => {
-    expect(render(<Heading nowrap theme={theme} />)).toEqual(render(<span className="no-wrap" />))
-  })
-
   it('renders fontSize', () => {
     for (const fontSize of theme.fontSizes) {
       expect(render(<Heading fontSize={fontSize} theme={theme} />)).toHaveStyleRule('font-size', `${fontSize}`)
@@ -93,25 +89,4 @@ describe('Heading', () => {
   it('respects the "fontStyle" prop', () => {
     expect(render(<Heading fontStyle="italic" />)).toHaveStyleRule('font-style', 'italic')
   })
-
-  it.skip('renders fontSize with f* classes using inverse scale', () => {
-    expect(render(<Heading fontSize={0} theme={theme} />)).toEqual(render(<span className="f6" />))
-    expect(render(<Heading fontSize={1} theme={theme} />)).toEqual(render(<span className="f5" />))
-    expect(render(<Heading fontSize={2} theme={theme} />)).toEqual(render(<span className="f4" />))
-    expect(render(<Heading fontSize={3} theme={theme} />)).toEqual(render(<span className="f3" />))
-    expect(render(<Heading fontSize={4} theme={theme} />)).toEqual(render(<span className="f2" />))
-    expect(render(<Heading fontSize={5} theme={theme} />)).toEqual(render(<span className="f1" />))
-    expect(render(<Heading fontSize={6} theme={theme} />)).toEqual(render(<span className="f0" />))
-  })
-
-  it.skip('does not pass on arbitrary attributes', () => {
-    const defaultOutput = render(<Heading />)
-    expect(render(<Heading bugs="bar" />)).toEqual(defaultOutput)
-    expect(render(<Heading hidden />)).toEqual(defaultOutput)
-  })
-
-  it.skip('respects other values for fontSize', () => {
-    expect(render(<Heading fontSize="2em" theme={theme} />)).toHaveStyleRule('font-size', '2em')
-    expect(render(<Heading fontSize={100} theme={theme} />)).toHaveStyleRule('font-size', '100px')
-  })
 })
diff --git a/src/__tests__/__snapshots__/Heading.js.snap b/src/__tests__/__snapshots__/Heading.tsx.snap
similarity index 100%
rename from src/__tests__/__snapshots__/Heading.js.snap
rename to src/__tests__/__snapshots__/Heading.tsx.snap
diff --git a/yarn.lock b/yarn.lock
index 0b64c8805af..0b1d531f476 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1882,9 +1882,9 @@
   integrity sha512-cpmwBRcHJmmZx0OGU7aPVwGWGbs4iKwVYchk9iuMtxNCA2zorwdaTz4GkLgs2WGxiRZRFKnV1k6tRUHX7tBMxg==
 
 "@types/json-schema@^7.0.3", "@types/json-schema@^7.0.5":
-  version "7.0.6"
-  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.6.tgz#f4c7ec43e81b319a9815115031709f26987891f0"
-  integrity sha512-3c+yGKvVP5Y9TYBEibGNR+kLtijnj7mYrXRg+WpFb2X9xm04g/DXYkfg4hmzJQosc9snFNUPkbYIhu+KAm6jJw==
+  version "7.0.7"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.7.tgz#98a993516c859eb0d5c4c8f098317a9ea68db9ad"
+  integrity sha512-cxWFQVseBm6O9Gbw1IWb8r6OS4OhSt3hPZLkFApLjM8TEXROBuQGLAH2i2gZpcXdLBIrpXuTDhH7Vbm1iXmNGA==
 
 "@types/json5@^0.0.29":
   version "0.0.29"
@@ -1912,14 +1912,14 @@
   integrity sha512-fZQQafSREFyuZcdWFAExYjBiCL7AUCdgsk80iO0q4yihYYdcIiH28CcuPTGFgLOCC8RlW49GSQxdHwZP+I7CNg==
 
 "@types/node@*":
-  version "14.14.21"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.21.tgz#d934aacc22424fe9622ebf6857370c052eae464e"
-  integrity sha512-cHYfKsnwllYhjOzuC5q1VpguABBeecUp24yFluHpn/BQaVxB1CuQ1FSRZCzrPxrkIfWISXV2LbeoBthLWg0+0A==
+  version "14.14.22"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.22.tgz#0d29f382472c4ccf3bd96ff0ce47daf5b7b84b18"
+  integrity sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==
 
 "@types/node@^12.7.1":
-  version "12.19.14"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.19.14.tgz#59e5029a3c2aea34f68b717955381692fd47cafb"
-  integrity sha512-2U9uLN46+7dv9PiS8VQJcHhuoOjiDPZOLAt0WuA1EanEknIMae+2QbMhayF7cgGqjvRVIfNpt+6jLPczJZFiRw==
+  version "12.19.15"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.19.15.tgz#0de7e978fb43db62da369db18ea088a63673c182"
+  integrity sha512-lowukE3GUI+VSYSu6VcBXl14d61Rp5hA1D+61r16qnwC0lYNSqdxcvRh0pswejorHfS+HgwBasM8jLXz0/aOsw==
 
 "@types/normalize-package-data@^2.4.0":
   version "2.4.0"
@@ -1949,9 +1949,9 @@
     "@types/react" "^16"
 
 "@types/react-native@*":
-  version "0.63.45"
-  resolved "https://registry.yarnpkg.com/@types/react-native/-/react-native-0.63.45.tgz#944a471d1e40e22eb8eae4369db7facf697c545e"
-  integrity sha512-HvsHe8hbcAuZJKcqUEN+E/qV1TNjL6venNUiQvDi7d1IlEK6ZyTrpIS937PwiNWc3UePNzR0xZ++aqpMAJqz1A==
+  version "0.63.46"
+  resolved "https://registry.yarnpkg.com/@types/react-native/-/react-native-0.63.46.tgz#942df5af29046c6f22227495e00d5297cc1cea73"
+  integrity sha512-SnBnWRErpISIaWk4K8kAfIKqSPdZ8fdH6HIw7kVdz6jMl/5FAf6iXeIwRfVZg1bCMh+ymNPCpSENNNEVprxj/w==
   dependencies:
     "@types/react" "*"
 
@@ -2003,12 +2003,12 @@
     "@types/react-native" "*"
     csstype "^2.2.0"
 
-"@types/styled-system@5.1.2":
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/@types/styled-system/-/styled-system-5.1.2.tgz#d75c40bc4a3bb0d0022eb3dcae58854129e9dd32"
-  integrity sha512-Byh33qthYnI6+qS0TRr4vqd+N/ax6ic1NFE6ZA16xuVr/EvYvSB8+diEP1lTSE7sP/MTdQpl+KaONREnyalDUA==
+"@types/styled-system@5.1.10":
+  version "5.1.10"
+  resolved "https://registry.yarnpkg.com/@types/styled-system/-/styled-system-5.1.10.tgz#dcf5690dd837ca49b8de1f23cb99d510c7f4ecb3"
+  integrity sha512-OmVjC9OzyUckAgdavJBc+t5oCJrNXTlzWl9vo2x47leqpX1REq2qJC49SEtzbu1OnWSzcD68Uq3Aj8TeX+Kvtg==
   dependencies:
-    csstype "^2.6.4"
+    csstype "^3.0.2"
 
 "@types/styled-system__css@5.0.14":
   version "5.0.14"
@@ -3344,9 +3344,9 @@ camelize@^1.0.0:
   integrity sha1-FkpUg+Yw+kMh5a8HAg5TGDGyYJs=
 
 caniuse-lite@^1.0.30001109, caniuse-lite@^1.0.30001173:
-  version "1.0.30001178"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001178.tgz#3ad813b2b2c7d585b0be0a2440e1e233c6eabdbc"
-  integrity sha512-VtdZLC0vsXykKni8Uztx45xynytOi71Ufx9T8kHptSw9AL4dpqailUJJHavttuzUe1KYuBYtChiWv+BAb7mPmQ==
+  version "1.0.30001179"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001179.tgz#b0803883b4471a6c62066fb1752756f8afc699c8"
+  integrity sha512-blMmO0QQujuUWZKyVrD1msR4WNDAqb/UPO1Sw2WWsQ7deoM5bJiicKnWJ1Y0NS/aGINSnKPIWBMw5luX+NDUCA==
 
 capture-exit@^2.0.0:
   version "2.0.0"
@@ -3557,9 +3557,9 @@ co@^4.6.0:
   integrity sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=
 
 codemirror@^5.51.0:
-  version "5.59.1"
-  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.59.1.tgz#cd6465555a87f8a2243eb41ffb460c777e15212c"
-  integrity sha512-d0SSW/PCCD4LoSCBPdnP0BzmZB1v3emomCUtVlIWgZHJ06yVeBOvBtOH7vYz707pfAvEeWbO9aP6akh8vl1V3w==
+  version "5.59.2"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.59.2.tgz#ee674d3a4a8d241af38d52afc482625ba7393922"
+  integrity sha512-/D5PcsKyzthtSy2NNKCyJi3b+htRkoKv3idswR/tR6UAvMNKA7SrmyZy6fOONJxSRs1JlUWEDAbxqfdArbK8iA==
 
 collect-v8-coverage@^1.0.0:
   version "1.0.1"
@@ -4025,7 +4025,7 @@ cssstyle@^2.0.0:
   dependencies:
     cssom "~0.3.6"
 
-csstype@^2.2.0, csstype@^2.6.4:
+csstype@^2.2.0:
   version "2.6.14"
   resolved "https://registry.yarnpkg.com/csstype/-/csstype-2.6.14.tgz#004822a4050345b55ad4dcc00be1d9cf2f4296de"
   integrity sha512-2mSc+VEpGPblzAxyeR+vZhJKgYg0Og0nnRi7pmRXFYYxSfnOnW8A5wwQb4n4cE2nIOzqKOAzLCaEX6aBmNEv8A==
@@ -4463,9 +4463,9 @@ ee-first@1.1.1:
   integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
 
 electron-to-chromium@^1.3.634:
-  version "1.3.642"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.642.tgz#8b884f50296c2ae2a9997f024d0e3e57facc2b94"
-  integrity sha512-cev+jOrz/Zm1i+Yh334Hed6lQVOkkemk2wRozfMF4MtTR7pxf3r3L5Rbd7uX1zMcEqVJ7alJBnJL7+JffkC6FQ==
+  version "1.3.643"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.643.tgz#fc196e17d01f4d874ef2307b009c0cd993ebe1c7"
+  integrity sha512-TGomM4gj8adt/uqRgPbu9F0yhUVAR1deww5X0fvbQgpGr9suSMjLgc4IwQ9YKGkp1t03cDbZum20OfAkiTYjAg==
 
 elliptic@^6.5.3:
   version "6.5.3"
@@ -5372,9 +5372,9 @@ flatted@^2.0.0:
   integrity sha512-r5wGx7YeOwNWNlCA0wQ86zKyDLMQr+/RB8xy74M4hTphfmjlijTSSXGuH8rnvKZnfT9i+75zmd8jcKdMR4O6jA==
 
 flow-parser@0.*:
-  version "0.142.0"
-  resolved "https://registry.yarnpkg.com/flow-parser/-/flow-parser-0.142.0.tgz#68792438f2593a9e3d862a5ce2278493991619aa"
-  integrity sha512-gkdbagtuYQw7fo/D1AwCsDpMyxp/bdZkgfq95ev2MoETD1OW84PhU+vitupwte+6AJc2MRJyCdgfWhan8AGhzA==
+  version "0.143.1"
+  resolved "https://registry.yarnpkg.com/flow-parser/-/flow-parser-0.143.1.tgz#c18e1745df97d1132e60036e88cbf1925b5094e4"
+  integrity sha512-DWmnt0P1tieuQErYeWmxCNIkzm5Fqd5sMH685v/jCtu8CAvdLEwKi45jqYhij178k+NAy+FNe2jDvQNs7WLBIA==
 
 flush-write-stream@^1.0.0:
   version "1.1.1"