diff --git a/rest-api-spec/api/bulk.json b/rest-api-spec/api/bulk.json
index aefbee7015272..53a2e204211ba 100644
--- a/rest-api-spec/api/bulk.json
+++ b/rest-api-spec/api/bulk.json
@@ -42,10 +42,6 @@
         "type": {
           "type" : "string",
           "description" : "Default document type for items which don't provide one"
-        },
-        "timeout": {
-          "type" : "time",
-          "description" : "Explicit operation timeout"
         }
       }
     },