diff --git a/models/ShipyardTransaction.json b/models/ShipyardTransaction.json
index 8e9461b..877a911 100644
--- a/models/ShipyardTransaction.json
+++ b/models/ShipyardTransaction.json
@@ -1,6 +1,10 @@
 {
   "type": "object",
   "properties": {
+    "waypointSymbol": {
+      "type": "string",
+      "description": "The symbol of the waypoint where the transaction took place."
+    },
     "shipSymbol": {
       "type": "string",
       "description": "The symbol of the ship that was purchased."
@@ -21,7 +25,8 @@
     }
   },
   "required": [
-    "symbol",
+    "waypointSymbol",
+    "shipSymbol",
     "price",
     "agentSymbol",
     "timestamp"
diff --git a/reference/SpaceTraders.json b/reference/SpaceTraders.json
index 7443b0a..26f710e 100644
--- a/reference/SpaceTraders.json
+++ b/reference/SpaceTraders.json
@@ -1101,11 +1101,15 @@
                         },
                         "ship": {
                           "$ref": "../models/Ship.json"
+                        },
+                        "transaction": {
+                          "$ref": "../models/ShipyardTransaction.json"
                         }
                       },
                       "required": [
                         "ship",
-                        "agent"
+                        "agent",
+                        "transaction"
                       ],
                       "type": "object"
                     }