diff --git a/gluon/http.py b/gluon/http.py
index c10c6a63..49e900cc 100644
--- a/gluon/http.py
+++ b/gluon/http.py
@@ -44,6 +44,7 @@ defined_status = {
     416: 'REQUESTED RANGE NOT SATISFIABLE',
     417: 'EXPECTATION FAILED',
     422: 'UNPROCESSABLE ENTITY',
+    429: 'TOO MANY REQUESTS',
     451: 'UNAVAILABLE FOR LEGAL REASONS', # http://www.451unavailable.org/
     500: 'INTERNAL SERVER ERROR',
     501: 'NOT IMPLEMENTED',