diff --git a/README.md b/README.md
index f68feab1c..67feb37d6 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,21 @@ Please, notice that these APIs for embedding are still unstable and may change b
 WebAssembly
 -----------
 
-WebAssembly support is in experimental status. It may lack major features available in JavaScript backend. There's no documentation yet and you should do many things by hands (like embedding generated `wasm` file into your page, importing JavaScript objects, etc). Look at [samples/benchmark](https://github.com/konsoletyper/teavm/blob/master/samples/benchmark/) module. You should first examine `pom.xml` file to learn how to build `wasm` file from Java. Then you may want to examine `index-teavm.html` and `index-teavm.js` to learn how to embed WebAssembly into your web page. 
+WebAssembly support is in experimental status. It may lack major features available in JavaScript backend. There's no documentation yet and you should do many things by hands (like embedding generated `wasm` file into your page, importing JavaScript objects, etc). Look at [samples/benchmark](https://github.com/konsoletyper/teavm/blob/master/samples/benchmark/) module. You should first examine `pom.xml` file to learn how to build `wasm` file from Java. Then you may want to examine `index-teavm.html` and `index-teavm.js` to learn how to embed WebAssembly into your web page.
+
+
+License
+-------
+ 
+TeaVM is distributed under [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0).
+TeaVM does not rely on OpenJDK or code or other (L)GPL code.
+TeaVM has its own reimplementation of Java class library, which is either implemented from scratch or based on non-(L)GPL projects:
+
+* [Apache Harmony](https://harmony.apache.org/) (Apache 2.0)
+* [Joda-Time](https://github.com/JodaOrg/joda-time) (Apache 2.0)
+* [jzlib](https://github.com/ymnk/jzlib) (BSD style license)
+
+If you want to contribute code to implementation of Java class library, please make sure it's no based on OpenJDK or other code licensed under (L)GPL.
 
 
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