diff --git a/src/readme.md b/src/readme.md
index ef27578..f846de1 100644
--- a/src/readme.md
+++ b/src/readme.md
@@ -1,4 +1,8 @@
+This project is based on [mattnite/zig-zlib](https://github.com/mattnite/zig-zlib). I also used [LukasKastern]([Title](https://github.com/LukasKastern/zig-zlib) fork for making project compatibile with 0.11 zig master.
 
+There is existing deflate/gzip compressor/decompressor in zig standard library. For using it in websocket implementation I was missing ability to set window size (it is fixed on 32k) and sliding window functionality in decompressor.  
+It seams that most other websocket implementations are using zlib for deflate.
 
+### Refrences
 [Compression Extensions for WebSocket](https://datatracker.ietf.org/doc/html/rfc7692)  
 [zlib 1.2.13 Manual](https://www.zlib.net/manual.html)
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