diff --git a/README.md b/README.md
index b588aeb..21022ce 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 This extends the default JSON serialization adding the following:
 - Recursive data structure serialization
 - `undefined`/`NaN` serialization
-- `Set`/`Map` serialization
+- Serialization of `BigInt`'s, `Set`'s, `Map`'s
 - Function serialization (off by default)
 - Deep and partial-deep cleen object copy