diff --git a/prisma/migrations/20260824121446_add_incident_alert_relationship/migration.sql b/prisma/migrations/20260824121446_add_incident_alert_relationship/migration.sql
new file mode 100644
index 0000000..121d347
--- /dev/null
+++ b/prisma/migrations/20260824121446_add_incident_alert_relationship/migration.sql
@@ -0,0 +1,9 @@
+-- AlterTable
+ALTER TABLE "alerts" ADD COLUMN     "incidentId" TEXT;
+
+-- CreateIndex
+CREATE INDEX "alerts_incidentId_idx" ON "alerts"("incidentId");
+
+-- AddForeignKey
+ALTER TABLE "alerts" ADD CONSTRAINT "alerts_incidentId_fkey" FOREIGN KEY ("incidentId") REFERENCES "incidents"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 86a7b13..29ce9ab 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -24,19 +24,22 @@ model User {
 }
 
 model Alert {
-  id        String   @id @default(cuid())
-  userId    String
-  message   String
-  severity  String
-  status    String   @default("open")
-  createdAt DateTime @default(now())
-  updatedAt DateTime @updatedAt
+  id         String   @id @default(cuid())
+  userId     String
+  incidentId String?
+  message    String
+  severity   String
+  status     String   @default("open")
+  createdAt  DateTime @default(now())
+  updatedAt  DateTime @updatedAt
 
   acknowledgedAt DateTime?
   acknowledgedBy String?
 
-  user User @relation(fields: [userId], references: [id])
+  user     User      @relation(fields: [userId], references: [id])
+  incident Incident? @relation(fields: [incidentId], references: [id])
 
+  @@index([incidentId])
   @@map("alerts")
 }
 
@@ -206,6 +209,7 @@ model Incident {
   closedAt        DateTime?
 
   assignedUser User?              @relation(fields: [assignedUserId], references: [id])
+  alerts       Alert[]
   auditEntries IncidentAuditLog[]
 
   @@index([status])