diff --git a/content/en/docs/reference/labels-annotations-taints.md b/content/en/docs/reference/labels-annotations-taints.md
index 8f4327ceca..8671e1c8df 100644
--- a/content/en/docs/reference/labels-annotations-taints.md
+++ b/content/en/docs/reference/labels-annotations-taints.md
@@ -198,6 +198,15 @@ The kubelet can set this annotation on a Node to denote its configured IPv4 addr
 
 When kubelet is started with the "external" cloud provider, it sets this annotation on the Node to denote an IP address set from the command line flag (`--node-ip`). This IP is verified with the cloud provider as valid by the cloud-controller-manager.
 
+## batch.kubernetes.io/job-completion-index
+
+Example: `batch.kubernetes.io/job-completion-index: "3"`
+
+Used on: Pod
+
+The Job controller in the kube-controller-manager sets this annotation for Pods
+created with Indexed [completion mode](/docs/concepts/workloads/controllers/job/#completion-mode).
+
 **The taints listed below are always used on Nodes**
 
 ## node.kubernetes.io/not-ready