diff --git a/rest-api-spec/api/cluster.node_info.json b/rest-api-spec/api/cluster.node_info.json
index 66bda933f6d..2dc123b4eb2 100644
--- a/rest-api-spec/api/cluster.node_info.json
+++ b/rest-api-spec/api/cluster.node_info.json
@@ -52,6 +52,10 @@
           "type" : "boolean",
           "description" : "Return information about the thread pool"
         },
+        "timeout": {
+          "type" : "time",
+          "description" : "Explicit operation timeout"
+        },
         "transport": {
           "type" : "boolean",
           "description" : "Return information about transport"