diff --git a/TODO.md b/TODO.md
index 969a66b..d03dd7b 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,5 +1,5 @@
 ## v0.6.0
-- [ ] rewrite "open file" function
+- [x] rewrite "open file" function
 - [x] fix typos
 - [x] change app extension to **.cnp**
 - [ ] auto-lock on minimize