diff --git a/README.md b/README.md
index 8a0f3f9..2e35f29 100644
--- a/README.md
+++ b/README.md
@@ -101,4 +101,8 @@ The following modules include functions that I still intend on adding by exposin
 - Scanf
 - Random
 
-In addition to these, I plan on constructing a file IO library, from the functions in the existing standard library such as `open_in` and `close_in` for example (which are in `pervasives.ml` in the original library).
\ No newline at end of file
+In addition to these, I plan on constructing a file IO library, from the functions in the existing standard library such as `open_in` and `close_in` for example (which are in `pervasives.ml` in the original library).
+
+## Tests
+
+Unit tests are also planned for all collection modules, but have not been written yet.