diff --git a/README.md b/README.md
index 040b163c..22e9560b 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,10 @@ What is _containers_?
     be able to deal with your favorite unicode library).
 - A sub-library with complicated abstractions, `containers.advanced` (with
   a LINQ-like query module, batch operations using GADTs, and others).
+- Utilities aroud the `unix` library in `containers.unix` (mainly to spawn
+  sub-processes)
+- A bigstring module using `bigarray` in `containers.bigarray`
+- A lightweight S-expression printer and streaming parser in `containers.sexp`
 - A library using [Lwt](https://github.com/ocsigen/lwt/), `containers.lwt`.
   Currently only contains experimental, unstable stuff.
 - Random stuff, with *NO* *GUARANTEE* of even being barely usable or tested,