diff --git a/package.json b/package.json
index 482e4b7..b5c87bf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@owlboard/ts-types",
-  "version": "0.0.4",
+  "version": "0.0.5",
   "description": "Declares Typescript types for the OwlBoard stack",
   "main": "index.ts",
   "scripts": {
diff --git a/src/owlboardApi/staffLdb.ts b/src/owlboardApi/staffLdb.ts
index 9cea52b..196f164 100644
--- a/src/owlboardApi/staffLdb.ts
+++ b/src/owlboardApi/staffLdb.ts
@@ -24,7 +24,7 @@ export interface TrainServices {
     serviceIsSupressed?: string;
     origin: ServiceLocation[];
     destination: ServiceLocation[];
-    isCancelled: string;
+    isCancelled?: string;
     cancelReason?: string;
     delayReason?: string;
     arrivalType?: string;