diff --git a/test/repositories/ApiBasedRepositoryTests.test.ts b/test/repositories/ApiBasedRepositoryTests.test.ts
index 1ae6272..8511959 100644
--- a/test/repositories/ApiBasedRepositoryTests.test.ts
+++ b/test/repositories/ApiBasedRepositoryTests.test.ts
@@ -479,7 +479,34 @@ describe("getShuttleById", () => {
   });
 
   test("getShuttleById returns fresh data if expired", async () => {
+    updateGlobalFetchMockJson(genericShuttleDataBySystemId);
 
+    const initialCacheShuttle = {
+      coordinates: {
+        latitude: 33.791781,
+        longitude: -117.8589646,
+      },
+      name: "08",
+      routeId: "53966",
+      systemId: "1",
+      id: "5577",
+      millisecondsSinceEpoch: Date.now() - 100000,
+    }
+
+    const initialCache: ApiBasedRepositoryCache = {
+      shuttleByShuttleId: {
+        "5577": initialCacheShuttle
+      }
+    };
+
+    const ttls: ApiBasedRepositoryMillisecondTTLs = {
+      shuttleByShuttleId: 1000,
+    };
+
+    const repository = new ApiBasedRepository(initialCache, ttls);
+    const shuttle = await repository.getShuttleById("5577");
+    expect(shuttle?.id).toEqual(initialCacheShuttle.id);
+    expect(initialCacheShuttle.millisecondsSinceEpoch).not.toEqual(shuttle?.millisecondsSinceEpoch);
   });
 });