diff --git a/rest_framework/status.py b/rest_framework/status.py
index 8ed4f74db..2d725573e 100644
--- a/rest_framework/status.py
+++ b/rest_framework/status.py
@@ -83,4 +83,5 @@ HTTP_505_HTTP_VERSION_NOT_SUPPORTED = 505
 HTTP_506_VARIANT_ALSO_NEGOTIATES = 506
 HTTP_507_INSUFFICIENT_STORAGE = 507
 HTTP_508_LOOP_DETECTED = 508
+HTTP_509_BANDWIDTH_LIMIT_EXCEEDED = 509
 HTTP_511_NETWORK_AUTHENTICATION_REQUIRED = 511