diff --git a/README.md b/README.md
index faad9c5..13bbad8 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,9 @@ Below is an example of a bids extension:
       "description": "Award of Example PPP contract to Mega Consortium",
       "status": "active",
       "date": "2016-12-17T10:00:00-06:00",
-      "relatedBid": "1"
+      "relatedBids": [
+        "1"
+      ]
     }
   ]
 }
@@ -122,6 +124,7 @@ Report issues for this extension in the [ocds-extensions repository](https://git
 
 ### Unreleased
 
+* Add `Award.relatedBids` field, and deprecate `Award.relatedBid` field
 * Add `BidsStatistic.valueGross` field
 * Add `Bid.validityPeriod` field
 * Add `Bid.description` field
diff --git a/release-schema.json b/release-schema.json
index 6e9c173..ee196d5 100644
--- a/release-schema.json
+++ b/release-schema.json
@@ -15,7 +15,22 @@
           "type": [
             "string",
             "null"
-          ]
+          ],
+          "deprecated": {
+            "description": "This field is deprecated in favor of `relatedBids`, to allow an award to combine multiple bids.",
+            "deprecatedVersion": "1.2"
+          }
+        },
+        "relatedBids": {
+          "title": "Related bids",
+          "description": "Where bid details are used, a cross reference to the entries in the bids array to which this award relates. Provide the bid identifiers here.",
+          "type": [
+            "array",
+            "null"
+          ],
+          "items": {
+            "type": "string"
+          }
         }
       }
     },