fix readme
diff --git a/README.md b/README.md
index 191f024..2ab370c 100644
--- a/README.md
+++ b/README.md
@@ -13,4 +13,4 @@
 caravel_user_project that this is based on is
 https://github.com/efabless/caravel_user_project.
 
-4ft4: BSD.
+4ft4: MIT.