diff --git a/src/resolvers/OrderedStopResolvers.ts b/src/resolvers/OrderedStopResolvers.ts
index 0410e46..c29de5f 100644
--- a/src/resolvers/OrderedStopResolvers.ts
+++ b/src/resolvers/OrderedStopResolvers.ts
@@ -24,6 +24,7 @@ export const OrderedStopResolvers: Resolvers<ServerContext> = {
         routeId: parent.routeId,
         stopId: nextOrderedStopObject.id,
         systemId: system.id,
+        updatedTimeMs: nextOrderedStopObject.updatedTimeMs
       }
     },
     previousStop: async (parent, args, contextValue, _info): Promise<OrderedStop | null> => {
@@ -47,6 +48,7 @@ export const OrderedStopResolvers: Resolvers<ServerContext> = {
         routeId: parent.routeId,
         stopId: previousOrderedStopObject.id,
         systemId: system.id,
+        updatedTimeMs: previousOrderedStopObject.updatedTimeMs,
       }
     },
     stop: async (parent, args, contextValue, _info) => {
diff --git a/src/resolvers/RouteResolvers.ts b/src/resolvers/RouteResolvers.ts
index aa29fdc..732c70e 100644
--- a/src/resolvers/RouteResolvers.ts
+++ b/src/resolvers/RouteResolvers.ts
@@ -13,7 +13,8 @@ export const RouteResolvers: Resolvers<ServerContext> = {
         coordinates,
         name,
         id,
-        orientationInDegrees
+        orientationInDegrees,
+        updatedTimeMs
       }) => ({
         coordinates: coordinates as Coordinates,
         name,
@@ -22,6 +23,7 @@ export const RouteResolvers: Resolvers<ServerContext> = {
         id,
         orientationInDegrees,
         systemId: parent.systemId,
+        updatedTimeMs,
       }));
     },
     orderedStop: async (parent, args, contextValue, info) => {
@@ -41,6 +43,7 @@ export const RouteResolvers: Resolvers<ServerContext> = {
         routeId: parent.id,
         route: parent,
         systemId: system.id,
+        updatedTimeMs: orderedStop.updatedTimeMs,
       }
     },
   },
diff --git a/src/resolvers/ShuttleResolvers.ts b/src/resolvers/ShuttleResolvers.ts
index 103e40f..92cb62c 100644
--- a/src/resolvers/ShuttleResolvers.ts
+++ b/src/resolvers/ShuttleResolvers.ts
@@ -18,6 +18,7 @@ export const ShuttleResolvers: Resolvers<ServerContext> = {
         shuttleId: parent.id,
         shuttle: parent,
         systemId: system.id,
+        updatedTimeMs: etaForStopId.updatedTimeMs,
       };
     },
     etas: async (parent, args, contextValue, info) => {
@@ -27,17 +28,20 @@ export const ShuttleResolvers: Resolvers<ServerContext> = {
       const etasForShuttle = await system.shuttleRepository.getEtasForShuttleId(parent.id);
       if (!etasForShuttle) return null;
 
-      const computedEtas = await Promise.all(etasForShuttle.map(async ({
-                                                                         secondsRemaining,
-                                                                         stopId,
-                                                                       }): Promise<Eta | null> => {
-        return {
+      const computedEtas = await Promise.all(
+        etasForShuttle.map(async ({
           secondsRemaining,
           stopId,
-          shuttle: parent,
-          shuttleId: parent.id,
-          systemId: system.id,
-        }
+          updatedTimeMs
+        }): Promise<Eta | null> => {
+          return {
+            secondsRemaining,
+            stopId,
+            shuttle: parent,
+            shuttleId: parent.id,
+            systemId: system.id,
+            updatedTimeMs,
+          }
       }));
 
       if (computedEtas.every((eta) => eta !== null)) {
@@ -59,6 +63,7 @@ export const ShuttleResolvers: Resolvers<ServerContext> = {
         name: route.name,
         polylineCoordinates: route.polylineCoordinates,
         systemId: system.id,
+        updatedTimeMs: route.updatedTimeMs
       }
     }
   },
diff --git a/src/resolvers/SystemResolvers.ts b/src/resolvers/SystemResolvers.ts
index dc10fe9..e48e45f 100644
--- a/src/resolvers/SystemResolvers.ts
+++ b/src/resolvers/SystemResolvers.ts
@@ -36,6 +36,7 @@ export const SystemResolvers: Resolvers<ServerContext> = {
         name: stop.name,
         coordinates: stop.coordinates as Coordinates,
         systemId: parent.id,
+        updatedTimeMs: stop.updatedTimeMs,
       };
     },
     route: async (parent, args, contextValue, _info) => {
@@ -55,6 +56,7 @@ export const SystemResolvers: Resolvers<ServerContext> = {
         name: route.name,
         polylineCoordinates: route.polylineCoordinates as Coordinates[],
         systemId: parent.id,
+        updatedTimeMs: route.updatedTimeMs,
       };
     },
     shuttle: async (parent, args, contextValue, _info) => {