diff --git a/docs/usage.md b/docs/usage.md
index 07cf0f5..380d948 100644
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -80,7 +80,7 @@ Marked assignment #1111111 as complete
 ```
 
 ## The list command
-The `list` command lists the assignments. Currently, it has 2 optional categories, which are `current` and `completed`. The reason these categories are optional is that by default it's `current`, as to not require an unnecessary long command.
+The `list` command lists the assignments. Currently, it has 3 optional categories, which are `current`, `completed`, and `added` (assignments added via the `add` command). The reason these categories are optional is that by default it's `current`, as to not require an unnecessary long command.
 
 ### Example Usage