diff --git a/unix/.gitignore b/unix/.gitignore
index b93755326f0fdf85b51259d66a25ea285010acd6..eeafecf18a315c65412004f265eb0c9467559ecc 100644
--- a/unix/.gitignore
+++ b/unix/.gitignore
@@ -2,9 +2,11 @@ build
 build-fast
 build-minimal
 build-coverage
+build-nanbox
 micropython
 micropython_fast
 micropython_minimal
 micropython_coverage
+micropython_nanbox
 *.py
 *.gcov