diff --git a/packages/docs/src/pages/getting-started/gatsby.mdx b/packages/docs/src/pages/getting-started/gatsby.mdx
index d3dc61754..f7b88f34f 100755
--- a/packages/docs/src/pages/getting-started/gatsby.mdx
+++ b/packages/docs/src/pages/getting-started/gatsby.mdx
@@ -8,7 +8,7 @@ To use Theme UI with [Gatsby][], install and use
 [`gatsby-plugin-theme-ui`](/packages/gatsby-plugin).
 
 ```sh
-npm i theme-ui gatsby-plugin-theme-ui @emotion/react @mdx-js/react
+npm i theme-ui @theme-ui/mdx gatsby-plugin-theme-ui @emotion/react @mdx-js/react
 ```
 
 Add the plugin to your `gatsby-config.js`.
diff --git a/packages/gatsby-plugin-theme-ui/README.md b/packages/gatsby-plugin-theme-ui/README.md
index 85030165e..2d73f930d 100755
--- a/packages/gatsby-plugin-theme-ui/README.md
+++ b/packages/gatsby-plugin-theme-ui/README.md
@@ -3,7 +3,7 @@
 Gatsby plugin for adding Theme UI context
 
 ```sh
-npm i theme-ui gatsby-plugin-theme-ui @emotion/react @mdx-js/react
+npm i theme-ui @theme-ui/mdx gatsby-plugin-theme-ui @emotion/react @mdx-js/react
 ```
 
 ```js