diff --git a/source/reference/command/applyOps-field.yaml b/source/reference/command/applyOps-field.yaml
index aeb9575987d..acfd16ba7ec 100644
--- a/source/reference/command/applyOps-field.yaml
+++ b/source/reference/command/applyOps-field.yaml
@@ -19,4 +19,15 @@ name: preCondition
 type: array
 position: 2
 description: "An array of documents that contain the conditions that must be true in order to apply the oplog entry. Each document contains a set of conditions, as described in the next table."
+---
+object:
+  name: applyOps
+  type: dbcommand
+field:
+  optional: true
+  type: field
+name: alwaysUpsert
+type: array
+position: 2
+description: "A flag that indicates whether to apply update operations in the oplog as upserts. ``true`` indicates that updates will be applied as upserts, preventing cases in which updates followed by deletes will cause failures. This is the same manner in which secondaries perform normal replication, as operations from the replicated oplog may have already been executed. ``false`` indicates that updates will be applied as they are. This is the same manner in which secondaries perform initial syncs. ``true`` by default."
 ...