diff --git a/TODO b/TODO
index 5281eaf..616360b 100644
--- a/TODO
+++ b/TODO
@@ -62,7 +62,7 @@ Description: Implement the Knuth-Morris-Pratt algorithm for string searching.
 ID: 2
 Type: feature
 Title: implement circular buffer
-Status: open
+Status: in-progress
 Priority: high
 Created: 2025-05-04
 Description: implement a simple circular buffer