diff --git a/internal-packages/clickhouse/schema/040_add_task_runs_v2_external_deployment_id.sql b/internal-packages/clickhouse/schema/040_add_task_runs_v2_external_deployment_id.sql
new file mode 100644
index 00000000000..5cf8e816160
--- /dev/null
+++ b/internal-packages/clickhouse/schema/040_add_task_runs_v2_external_deployment_id.sql
@@ -0,0 +1,7 @@
+-- +goose Up
+ALTER TABLE trigger_dev.task_runs_v2
+ADD COLUMN IF NOT EXISTS external_deployment_id String DEFAULT '';
+
+-- +goose Down
+ALTER TABLE trigger_dev.task_runs_v2
+DROP COLUMN IF EXISTS external_deployment_id;
diff --git a/internal-packages/database/prisma/migrations/20260818120000_add_worker_deployment_external_id/migration.sql b/internal-packages/database/prisma/migrations/20260818120000_add_worker_deployment_external_id/migration.sql
new file mode 100644
index 00000000000..c4738af4dda
--- /dev/null
+++ b/internal-packages/database/prisma/migrations/20260818120000_add_worker_deployment_external_id/migration.sql
@@ -0,0 +1 @@
+ALTER TABLE "public"."WorkerDeployment" ADD COLUMN IF NOT EXISTS "externalId" TEXT;
diff --git a/internal-packages/database/prisma/migrations/20260818120100_add_worker_deployment_environment_id_external_id_index/migration.sql b/internal-packages/database/prisma/migrations/20260818120100_add_worker_deployment_environment_id_external_id_index/migration.sql
new file mode 100644
index 00000000000..f414e5bbab6
--- /dev/null
+++ b/internal-packages/database/prisma/migrations/20260818120100_add_worker_deployment_environment_id_external_id_index/migration.sql
@@ -0,0 +1 @@
+CREATE INDEX CONCURRENTLY IF NOT EXISTS "WorkerDeployment_environmentId_externalId_idx" ON "public"."WorkerDeployment"("environmentId", "externalId");
diff --git a/internal-packages/database/prisma/schema.prisma b/internal-packages/database/prisma/schema.prisma
index 1b5447b0ff1..76092217dbe 100644
--- a/internal-packages/database/prisma/schema.prisma
+++ b/internal-packages/database/prisma/schema.prisma
@@ -2288,6 +2288,7 @@ model WorkerDeployment {
   triggeredById String?
   triggeredVia  String?
   commitSHA     String?
+  externalId    String?
 
   startedAt   DateTime?
   installedAt DateTime?
@@ -2316,6 +2317,7 @@ model WorkerDeployment {
   @@index([commitSHA])
   @@index([environmentId, createdAt])
   @@index([environmentId, status, id])
+  @@index([environmentId, externalId])
 }
 
 enum WorkerDeploymentStatus {