diff --git a/README.md b/README.md
index 8067e55..2eed2b9 100644
--- a/README.md
+++ b/README.md
@@ -23,5 +23,9 @@ If you are having issues with `gnopls`, please feel free to open an issue.
 
 ## Additional information
 
+Special thanks to [Joseph Kato](https://github.com/jdkato)
+
+As some part of code is copied from [gnols](https://github.com/gno-playground/gnols).
+
 [language server]: https://langserver.org
 [LSP]: https://microsoft.github.io/language-server-protocol/