diff --git a/todo.md b/todo.md
index 53850ee..91ed5c7 100644
--- a/todo.md
+++ b/todo.md
@@ -4,11 +4,13 @@
     - [ ] translation module
 - [ ] https://flask.palletsprojects.com/en/stable/tutorial/tests/
 - [x] return a translation of a word
-- [ ] use json file as database
+- [x] use json file as database
 - [ ] define api
     - [ ] from
     - [ ] to
     - [ ] word
+- [ ] mount database instead of copying
+- [ ] create docker compose file
 
 ## v0.0.2
 - [ ] use database sqlite? mongodb?