diff --git a/schema.graphqls b/schema.graphqls
index ff2f1a9..b37b8d4 100644
--- a/schema.graphqls
+++ b/schema.graphqls
@@ -29,7 +29,7 @@ type ParkingStructure {
   spotsAvailable: Int!
   coordinates: Coordinates!
   address: String!
-  updatedTimeMs: Int!
+  updatedTime: DateTime
 }
 
 type Route {
@@ -40,7 +40,7 @@ type Route {
   shuttles: [Shuttle!]
   polylineCoordinates: [Coordinates!]!
   color: String!
-  updatedTimeMs: Int!
+  updatedTime: DateTime
 }
 
 type OrderedStop {
@@ -51,7 +51,7 @@ type OrderedStop {
   stop: Stop
   stopId: ID!
   systemId: ID!
-  updatedTimeMs: Int!
+  updatedTime: DateTime
 }
 
 type Stop {
@@ -61,7 +61,7 @@ type Stop {
   coordinates: Coordinates!
   etas: [ETA!]
   orderedStops: [OrderedStop!]
-  updatedTimeMs: Int!
+  updatedTime: DateTime
 }
 
 type Coordinates {
@@ -76,7 +76,7 @@ type ETA {
   shuttleId: ID!
   secondsRemaining: Float!
   systemId: ID!
-  updatedTimeMs: Int!
+  updatedTime: DateTime
 }
 
 type Shuttle {
@@ -89,7 +89,7 @@ type Shuttle {
   etas: [ETA!]
   eta(forStopId: ID): ETA
   orientationInDegrees: Float!
-  updatedTimeMs: Int!
+  updatedTime: DateTime
 }
 
 # Queries