diff --git a/packages/trpc/src/router/device/device.ts b/packages/trpc/src/router/device/device.ts
index 3a2478252bb..cc5da7e7594 100644
--- a/packages/trpc/src/router/device/device.ts
+++ b/packages/trpc/src/router/device/device.ts
@@ -10,54 +10,6 @@ import { protectedProcedure } from "../../trpc";
  * the rest of v1.
  */
 export const deviceRouter = {
-	/**
-	 * @deprecated Kept for backwards compat with shipped desktop/mobile clients
-	 * that still call heartbeat on a 30s interval. Same logic as registerDevice.
-	 */
-	heartbeat: protectedProcedure
-		.input(
-			z.object({
-				deviceId: z.string().min(1),
-				deviceName: z.string().min(1),
-				deviceType: z.enum(deviceTypeValues),
-			}),
-		)
-		.mutation(async ({ ctx, input }) => {
-			const organizationId = ctx.activeOrganizationId;
-			if (!organizationId) {
-				throw new TRPCError({
-					code: "BAD_REQUEST",
-					message: "No active organization selected",
-				});
-			}
-
-			const userId = ctx.session.user.id;
-			const now = new Date();
-
-			await db
-				.insert(devicePresence)
-				.values({
-					userId,
-					organizationId,
-					deviceId: input.deviceId,
-					deviceName: input.deviceName,
-					deviceType: input.deviceType,
-					lastSeenAt: now,
-					createdAt: now,
-				})
-				.onConflictDoUpdate({
-					target: [devicePresence.userId, devicePresence.deviceId],
-					set: {
-						deviceName: input.deviceName,
-						deviceType: input.deviceType,
-						lastSeenAt: now,
-						organizationId,
-					},
-				});
-
-			return { success: true };
-		}),
-
 	/**
 	 * Register device presence (called once on app startup).
 	 * Upserts a row so MCP can verify device ownership.