diff --git a/packages/tm-themes/NOTICE b/packages/tm-themes/NOTICE
index 4afffbe..f66a028 100644
--- a/packages/tm-themes/NOTICE
+++ b/packages/tm-themes/NOTICE
@@ -173,7 +173,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 
 =========================================================================================================
-Files:   github-dark.json, github-dark-default.json, github-dark-dimmed.json, github-light.json, github-light-default.json
+Files:   github-dark.json, github-dark-default.json, github-dark-dimmed.json, github-dark-high-contrast.json, github-light.json, github-light-default.json, github-light-high-contrast.json
 License: https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE
 SPDX:    MIT
 ---------------------------------------------------------------------------------------------------------
diff --git a/packages/tm-themes/README.md b/packages/tm-themes/README.md
index 04831a5..a3a5842 100644
--- a/packages/tm-themes/README.md
+++ b/packages/tm-themes/README.md
@@ -26,6 +26,7 @@ import { themes } from 'tm-themes'
 | Everforest Light | `everforest-light` | [sainnhe/everforest-vscode](https://github.com/sainnhe/everforest-vscode/blob/b039b30727868d77108ec85f0be66e6d80a9bc1f/themes/everforest-light.json) | [MIT](https://raw.githubusercontent.com/sainnhe/everforest-vscode/master/LICENSE) | 52.43 kB |
 | GitHub Light | `github-light` | [primer/github-vscode-theme](https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js) | [MIT](https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE) | 10.86 kB |
 | GitHub Light Default | `github-light-default` | [primer/github-vscode-theme](https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js) | [MIT](https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE) | 13.73 kB |
+| GitHub Light High Contrast | `github-light-high-contrast` | [primer/github-vscode-theme](https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js) | [MIT](https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE) | 13.84 kB |
 | Light Plus | `light-plus` | [microsoft/vscode](https://github.com/microsoft/vscode/blob/cc4775f55aff152db2417dfaaddc643ee90b31f9/extensions/theme-defaults/themes/light_plus.json) | [MIT](https://raw.githubusercontent.com/microsoft/vscode/main/LICENSE.txt) | 9.47 kB |
 | Material Theme Lighter | `material-theme-lighter` | [antfu/vsc-material-theme](https://github.com/antfu/vsc-material-theme/blob/f09de7a2970defaed43d8e293b4d3ac4e350e71b/src/material.theme.config.ts) | [Apache-2.0](https://raw.githubusercontent.com/antfu/vsc-material-theme/main/LICENSE) | 18.14 kB |
 | Min Light | `min-light` | [misolori/min-theme](https://github.com/misolori/min-theme/blob/4641b5d395b9a3506572ec717e80ae8c7cdaae2a/themes/min-light.json) | [MIT](https://raw.githubusercontent.com/miguelsolorio/min-theme/master/LICENSE) | 6.75 kB |
@@ -53,6 +54,7 @@ import { themes } from 'tm-themes'
 | GitHub Dark | `github-dark` | [primer/github-vscode-theme](https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js) | [MIT](https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE) | 11.08 kB |
 | GitHub Dark Default | `github-dark-default` | [primer/github-vscode-theme](https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js) | [MIT](https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE) | 14.00 kB |
 | GitHub Dark Dimmed | `github-dark-dimmed` | [primer/github-vscode-theme](https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js) | [MIT](https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE) | 14.00 kB |
+| GitHub Dark High Contrast | `github-dark-high-contrast` | [primer/github-vscode-theme](https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js) | [MIT](https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE) | 14.16 kB |
 | Houston | `houston` | [withastro/houston-vscode](https://github.com/withastro/houston-vscode/blob/d297233be95e3f8fdecc22e4ffa92bb0e7265592/themes/houston.json) | [MIT](https://raw.githubusercontent.com/withastro/houston-vscode/main/LICENSE) | 34.53 kB |
 | LaserWave | `laserwave` | [Jaredk3nt/laserwave](https://github.com/Jaredk3nt/laserwave/blob/f768285c659425fbb6ec5642085df4902f8a8d92/themes/LaserWave-color-theme.json) | [MIT](https://raw.githubusercontent.com/Jaredk3nt/laserwave/master/LICENSE) | 11.17 kB |
 | Material Theme | `material-theme` | [antfu/vsc-material-theme](https://github.com/antfu/vsc-material-theme/blob/f09de7a2970defaed43d8e293b4d3ac4e350e71b/src/material.theme.config.ts) | [Apache-2.0](https://raw.githubusercontent.com/antfu/vsc-material-theme/main/LICENSE) | 18.12 kB |
diff --git a/packages/tm-themes/index.js b/packages/tm-themes/index.js
index 81c23b1..0342a4b 100644
--- a/packages/tm-themes/index.js
+++ b/packages/tm-themes/index.js
@@ -167,6 +167,17 @@ export const themes = [
     source: 'https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js',
     type: 'dark',
   },
+  {
+    byteSize: 14496,
+    displayName: 'GitHub Dark High Contrast',
+    lastUpdate: '2023-01-06T02:19:35Z',
+    license: 'MIT',
+    licenseUrl: 'https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE',
+    name: 'github-dark-high-contrast',
+    sha: 'f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1',
+    source: 'https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js',
+    type: 'dark',
+  },
   {
     byteSize: 11124,
     displayName: 'GitHub Light',
@@ -189,6 +200,17 @@ export const themes = [
     source: 'https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js',
     type: 'light',
   },
+  {
+    byteSize: 14176,
+    displayName: 'GitHub Light High Contrast',
+    lastUpdate: '2023-01-06T02:19:35Z',
+    license: 'MIT',
+    licenseUrl: 'https://raw.githubusercontent.com/primer/github-vscode-theme/main/LICENSE',
+    name: 'github-light-high-contrast',
+    sha: 'f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1',
+    source: 'https://github.com/primer/github-vscode-theme/blob/f47b83f1acebb7fba4a3ec0bdb9385f85e6e8aa1/src/theme.js',
+    type: 'light',
+  },
   {
     byteSize: 35362,
     displayName: 'Houston',
diff --git a/sources-themes.ts b/sources-themes.ts
index 6ed131f..6cccda2 100644
--- a/sources-themes.ts
+++ b/sources-themes.ts
@@ -196,9 +196,11 @@ export const sourcesMarketplace: ThemeSource[] = [
     [
       'GitHub Dark',
       'GitHub Dark Default',
+      'GitHub Dark Dimmed',
+      'GitHub Dark High Contrast',
       'GitHub Light',
       'GitHub Light Default',
-      'GitHub Dark Dimmed',
+      'GitHub Light High Contrast',
     ],
   ),
   ...generateMarketplaceSource(