diff --git a/server/prisma/schema.prisma b/server/prisma/schema.prisma
index a84b425..e6e372f 100644
--- a/server/prisma/schema.prisma
+++ b/server/prisma/schema.prisma
@@ -29,7 +29,7 @@ model Geolocation {
   accuracy         Float
   altitude         Float
   altitudeAccuracy Float
-  timestamp        DateTime
+  timestamp        DateTime @db.Timestamptz(3)
 }
 
 model Challenge {
@@ -48,10 +48,10 @@ model ChallengeAction {
   challengeId  Int          @unique
   active       Boolean      @default(false)
   success      Boolean      @default(false)
-  start        DateTime     @default(now())
-  end          DateTime?
-  penaltyStart DateTime?
-  penaltyEnd   DateTime?
+  start        DateTime     @default(now()) @db.Timestamptz(3)
+  end          DateTime?    @db.Timestamptz(3)
+  penaltyStart DateTime?    @db.Timestamptz(3)
+  penaltyEnd   DateTime?    @db.Timestamptz(3)
   moneyUpdate MoneyUpdate?
 }
 
@@ -62,8 +62,8 @@ model TrainTrip {
   distance      Float
   from          String
   to            String
-  departureTime DateTime
-  arrivalTime   DateTime
+  departureTime DateTime     @db.Timestamptz(3)
+  arrivalTime   DateTime     @db.Timestamptz(3)
   infoJson      Json
   geometry      String
   moneyUpdate   MoneyUpdate?