diff --git a/packages/gatsby-remark-prismjs/README.md b/packages/gatsby-remark-prismjs/README.md
index 7bb1e9c49c1f1..c96b543243187 100644
--- a/packages/gatsby-remark-prismjs/README.md
+++ b/packages/gatsby-remark-prismjs/README.md
@@ -211,18 +211,3 @@ to facilitate the desired line highlight behavior.
 [5]: https://github.com/PrismJS/prism/tree/1d5047df37aacc900f8270b1c6215028f6988eb1/themes
 [6]: http://prismjs.com/
 
-## Contributing Notes
-
-We vendor the `prismjs` components file in `prism-language-dependencies.js`. We use the `prism-language-dependencies.js` file to tell `gatsby-remark-prismjs` which languages it can syntax highlight. Thus, when the `prismjs` library is updated, we need to update the our `prism-language-dependencies.js` file. To do this, we have created a script at `scripts/get-prism-language-dependencies.js`. To run this script:
-
-* Move into the `gatsby/packages/gatsby-remark-prismjs/scripts` dir
-
-  ```bash
-  cd gatsby/packages/gatsby-remark-prismjs/scripts
-  ```
-
-* Run the script
-
-  ```bash
-  node get-prism-language-dependencies.js
-  ```