diff --git a/TODO b/TODO
index 189135f..3fbfbbc 100644
--- a/TODO
+++ b/TODO
@@ -50,7 +50,7 @@ Description: [Detailed explanation]
 ID: 1
 Type: feature
 Title: implement KMP algorithm for string searching
-Status: open
+Status: in-progress
 Priority: high
 Created: 2025-05-03
 Description: Implement the Knuth-Morris-Pratt algorithm for string searching.