diff --git a/requirements.txt b/requirements.txt
index bc6fa65..791f646 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 # Core dependencies
 flask>=2.0.0
+flask-limiter>=2.5.4
 requests>=2.28.0
 
 # BLE scanning with manufacturer data detection (optional - for TSCM)