diff --git a/project/server/src/layer/scheduler/scheduled/derive/subject.module.ts b/project/server/src/layer/scheduler/scheduled/derive/subject.module.ts
new file mode 100644
index 00000000..12c93661
--- /dev/null
+++ b/project/server/src/layer/scheduler/scheduled/derive/subject.module.ts
@@ -0,0 +1,11 @@
+import { Module } from "@nestjs/common";
+
+import { ModuleDatabase } from "../../../database/database.module";
+import { ServiceSchedulerScheduledDeriveSubject } from "./subject.service";
+
+@Module({
+	imports: [ModuleDatabase],
+	providers: [ServiceSchedulerScheduledDeriveSubject],
+	exports: [ServiceSchedulerScheduledDeriveSubject],
+})
+export class ModuleSchedulerScheduledDeriveSubject {}
diff --git a/project/server/src/layer/scheduler/scheduled/derive/subject.service.ts b/project/server/src/layer/scheduler/scheduled/derive/subject.service.ts
new file mode 100644
index 00000000..6cb9ddf4
--- /dev/null
+++ b/project/server/src/layer/scheduler/scheduled/derive/subject.service.ts
@@ -0,0 +1,13 @@
+import { Inject, Injectable } from "@nestjs/common";
+
+import { SchedulerScheduledDeriveSubject } from "../../../../service/scheduler/scheduled/derive/subject";
+import { DatabaseDerived } from "../../../database/database.module";
+
+import type { IDatabase } from "../../../../service/database";
+
+@Injectable()
+export class ServiceSchedulerScheduledDeriveSubject extends SchedulerScheduledDeriveSubject {
+	constructor(@Inject(DatabaseDerived) db: IDatabase<"derived">) {
+		super(db);
+	}
+}
diff --git a/project/server/src/layer/scheduler/scheduler.module.ts b/project/server/src/layer/scheduler/scheduler.module.ts
index f45e8fc7..aace8137 100644
--- a/project/server/src/layer/scheduler/scheduler.module.ts
+++ b/project/server/src/layer/scheduler/scheduler.module.ts
@@ -3,20 +3,29 @@ import { Module } from "@nestjs/common";
 import { ModuleIntrospection } from "../introspection/introspection.module";
 import { ModuleSchedulerScheduledDeriveDevice } from "./scheduled/derive/device.module";
 import { ServiceSchedulerScheduledDeriveDevice } from "./scheduled/derive/device.service";
+import { ModuleSchedulerScheduledDeriveSubject } from "./scheduled/derive/subject.module";
+import { ServiceSchedulerScheduledDeriveSubject } from "./scheduled/derive/subject.service";
 import { SchedulerScheduled } from "./scheduler.registry";
 import { ServiceScheduler } from "./scheduler.service";
 
 import type { SchedulerScheduledInstance } from "../../service/scheduler/base";
 
 @Module({
-	imports: [ModuleIntrospection, ModuleSchedulerScheduledDeriveDevice],
+	imports: [
+		ModuleIntrospection,
+		ModuleSchedulerScheduledDeriveDevice,
+		ModuleSchedulerScheduledDeriveSubject,
+	],
 	providers: [
 		{
 			provide: SchedulerScheduled,
 			useFactory: (
 				...units: SchedulerScheduledInstance[]
 			): SchedulerScheduled => units,
-			inject: [ServiceSchedulerScheduledDeriveDevice],
+			inject: [
+				ServiceSchedulerScheduledDeriveDevice,
+				ServiceSchedulerScheduledDeriveSubject,
+			],
 		},
 		ServiceScheduler,
 	],