diff --git a/README.md b/README.md
index e56467f..4fe0cb7 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Languages are allowed only if they meet **all** of the following criteria:
 2. **Type safety**
    - For Python, type hints with a strict type checker are mandatory.
    - Use TypeScript instead of JavaScript.
-   - Only `.ts` files are allowed, including config files; `.js`, `.mjs`, `.cjs`, `.jsx`, and `.tsx` are not.
+   - Only `.ts` files are allowed, even for configs.
 3. **Concurrency support**
    - Event-driven, async models only.
    - Thread-based models are not allowed.