added Crystal binding
diff --git a/index.html b/index.html
index 0e8818e..896cb0d 100644
--- a/index.html
+++ b/index.html
@@ -158,6 +158,7 @@
 |__Elixir__                 |Mykola Konyk       |https://github.com/ttvd/elixir-xxhash
 |__Tcl__ (XXH32, pure)      |D. Bohdan          |https://wiki.tcl-lang.org/48790
 |__Bash__ (pure)            |Devin Hussey       |https://github.com/easyaspi314/xxbash
+|__Crystal__                |Lucjan Suski       |https://github.com/methyl/xxhash