1 files changed, 3 insertions, 1 deletions
diff --git a/README.md b/README.md
index 3e7e6c8..d7f5ced 100644
--- a/README.md
+++ b/README.md
@@ -14,10 +14,12 @@ Organize folders as you wish, only `metadata.json` files matter:
   "authorsSort": "Author sorting",
   "genres": [ "Foo", "Bar", "Baz" ],
   "year": "1234",
-  "read": true
+  "read": "Read"
 }
 ```
 
+`read` is one of: `Read`, `Unread`, `Reading`, `Stopped`.
+
 Each `metadata.json` file correspond to a book, and there **must** be a cover
 named `cover.ext` in the same directory. Any extension works.