diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,10 +1,12 @@
 # typescript-examples
 Examples for a typescript lecture.
 
-Typescript version 4 is expected, but most examples work on props versions as well
+Typescript version `^4.2` is expected, but almost all examples work on any `4.x` version, and most work on `>= 3.7`.
+
+### 
 
 Resources:
  - [Handbook](https://www.typescriptlang.org/docs/handbook/intro.html)
  - [Release Notes](https://www.typescriptlang.org/docs/handbook/release-notes/overview.html)
  - [Playground](https://www.typescriptlang.org/play) -> go to `Examples` or `What's New`
- - [tsconfig options](https://www.typescriptlang.org/tsconfig)
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+ - [tsconfig options](https://www.typescriptlang.org/tsconfig)