diff --git a/README.md b/README.md
index 76305e4..8e79138 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,7 @@ Currently, two official plugins are available:
 ## Expanding the ESLint configuration
 
 If you are developing a production application, we recommend using TypeScript with type-aware lint rules enabled. Check out the [TS template](https://github.com/vitejs/vite/tree/main/packages/create-vite/template-react-ts) for information on how to integrate TypeScript and [`typescript-eslint`](https://typescript-eslint.io) in your project.
+
+## Development notes
+
+Don't forget to set VITE_OPENAI_API_KEY environment variable.
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