diff --git a/rest_framework/status.py b/rest_framework/status.py
index df0fa0f02..a99c44720 100644
--- a/rest_framework/status.py
+++ b/rest_framework/status.py
@@ -37,6 +37,7 @@ HTTP_204_NO_CONTENT = 204
 HTTP_205_RESET_CONTENT = 205
 HTTP_206_PARTIAL_CONTENT = 206
 HTTP_207_MULTI_STATUS = 207
+HTTP_226_IM_USED = 226
 HTTP_300_MULTIPLE_CHOICES = 300
 HTTP_301_MOVED_PERMANENTLY = 301
 HTTP_302_FOUND = 302