diff --git a/server/src/network/SocketServer.ts b/server/src/network/SocketServer.ts
index f48775d..8d753e2 100644
--- a/server/src/network/SocketServer.ts
+++ b/server/src/network/SocketServer.ts
@@ -33,7 +33,7 @@ export class SocketServer {
 
   private setupBroadcast(): void {
     this.gameLoop.setBroadcastHandler(() => {
-      const update = serializeStateUpdate(this.gameLoop.world, this.gameLoop.getTick(), this.gameLoop.getGameTime());
+      const update = serializeStateUpdate(this.gameLoop.world, this.gameLoop.getTick(), this.gameLoop.getGameTime(), this.gameLoop.getDayNumber());
       this.io.emit('state-update', update);
     });
 
diff --git a/server/src/network/stateSerializer.ts b/server/src/network/stateSerializer.ts
index c8c584b..e0d5c23 100644
--- a/server/src/network/stateSerializer.ts
+++ b/server/src/network/stateSerializer.ts
@@ -97,7 +97,7 @@ export function serializeWorldState(world: World, map: GameMap): WorldState {
   };
 }
 
-export function serializeStateUpdate(world: World, tick: number, gameTime: number): StateUpdate {
+export function serializeStateUpdate(world: World, tick: number, gameTime: number, dayNumber: number): StateUpdate {
   const entities = world.query('position').map(id => serializeEntity(world, id));
-  return { entities, tick, gameTime };
+  return { entities, tick, gameTime, dayNumber };
 }