diff --git a/api-ref/source/clusters.inc b/api-ref/source/clusters.inc
index 06609db5e2..76b26f1e3b 100644
--- a/api-ref/source/clusters.inc
+++ b/api-ref/source/clusters.inc
@@ -38,6 +38,7 @@ Request
   - cluster_template_id: clustertemplate_id
   - node_count: node_count
   - create_timeout: create_timeout
+  - keypair: keypair_id
 
 .. note::
 
diff --git a/api-ref/source/samples/cluster-create-req.json b/api-ref/source/samples/cluster-create-req.json
index 934e93c342..fa1f36ddcd 100644
--- a/api-ref/source/samples/cluster-create-req.json
+++ b/api-ref/source/samples/cluster-create-req.json
@@ -4,5 +4,6 @@
    "master_count":2,
    "cluster_template_id":"0562d357-8641-4759-8fed-8173f02c9633",
    "node_count":2,
-   "create_timeout":60
-}
\ No newline at end of file
+   "create_timeout":60,
+   "keypair":"my_keypair"
+}