diff --git a/src/routes/estimation/[roomId]/+page.svelte b/src/routes/estimation/[roomId]/+page.svelte
index 3dd964a..f71b95b 100644
--- a/src/routes/estimation/[roomId]/+page.svelte
+++ b/src/routes/estimation/[roomId]/+page.svelte
@@ -60,6 +60,7 @@
 	let showRestartButton = false;
 	let showEstimates = false;
 	let disableEstimates: boolean = false;
+	let audioElement;
 
 	function closeModal() {
 		showModal = false;
@@ -134,6 +135,8 @@
 			if (usersList && typeof usersList.triggerEmoji === 'function') {
 				usersList.triggerEmoji(message.cardId, message.emoji);
 			}
+		} else if (message.type === 'nudge') {
+			audioElement.play();
 		}
 	}
 
@@ -190,6 +193,8 @@
 	<EstimateGroupsList {estimateGroups} />
 {/if}
 
+<audio src="/call-to-attention.mp3" bind:this={audioElement}></audio>
+
 <style>
 	.button-container {
 		display: flex;
diff --git a/src/server/classes/Room.ts b/src/server/classes/Room.ts
index b53fa7b..af6ddd4 100644
--- a/src/server/classes/Room.ts
+++ b/src/server/classes/Room.ts
@@ -26,6 +26,15 @@ export class Room {
 		return this.users.get(ws);
 	}
 
+	getWebSocketByUser(user: User): WebSocket | null {
+		for (const [ws, u] of this.users) {
+			if (u === user) {
+				return ws;
+			}
+		}
+		return null;
+	}
+
 	broadcast(message: any) {
 		this.users.forEach((user, client) => {
 			if (client.readyState === WebSocket.OPEN) {
diff --git a/src/server/websocket.ts b/src/server/websocket.ts
index 2c5f65b..aff0a10 100644
--- a/src/server/websocket.ts
+++ b/src/server/websocket.ts
@@ -96,13 +96,43 @@ wss.on('connection', (ws: WebSocket, req) => {
 						estimate
 					});
 
+					const users = room.getUsers();
+					let timeout = undefined;
+
 					const allEstimates = room.getAllEstimates();
-					if (allEstimates.size === room.getUsers().length) {
-						const users = room.getUsers();
+					if (allEstimates.size === users.length) {
+						// If all users have estimated, clear the timeout
+						clearTimeout(timeout);
+						timeout = undefined;
+
 						broadcastToRoom(room.id, {
 							type: 'estimation-closed',
 							groupedEstimates: groupEstimates(users)
 						});
+					} else if (allEstimates.size === users.length - 1) {
+						// The last user has 30 seconds to add their estimation, otherwise send the nudge message
+						let notEstimatedUser: User | undefined = undefined;
+						for (let i = 0; i < users.length; i++) {
+							if (!allEstimates.has(users[i].name)) {
+								notEstimatedUser = users[i];
+								break;
+							}
+						}
+						if (notEstimatedUser !== undefined) {
+							const ws = room.getWebSocketByUser(notEstimatedUser);
+							if (ws) {
+								// Cancel the old timeout if it's still running
+								if (timeout) {
+									clearTimeout(timeout);
+								}
+								// Set a new timeout
+								timeout = setTimeout(() => {
+									if (!room!.getAllEstimates().has(notEstimatedUser!.name)) {
+										ws.send(JSON.stringify({ type: 'nudge' }));
+									}
+								}, 30000);
+							}
+						}
 					}
 				}
 			}
diff --git a/static/call-to-attention.mp3 b/static/call-to-attention.mp3
new file mode 100644
index 0000000..c625d3e
Binary files /dev/null and b/static/call-to-attention.mp3 differ