diff --git a/packages/backend-app-api/src/services/implementations/lifecycle/lifecycleServiceFactory.ts b/packages/backend-app-api/src/services/implementations/lifecycle/lifecycleServiceFactory.ts
index c0cfcf7d8c..2b68a81807 100644
--- a/packages/backend-app-api/src/services/implementations/lifecycle/lifecycleServiceFactory.ts
+++ b/packages/backend-app-api/src/services/implementations/lifecycle/lifecycleServiceFactory.ts
@@ -44,6 +44,9 @@ export class BackendPluginLifecycleImpl implements LifecycleService {
     hook: LifecycleServiceStartupHook,
     options?: LifecycleServiceStartupOptions,
   ): void {
+    if (this.#hasStarted) {
+      throw new Error('Attempted to add startup hook after startup');
+    }
     this.#startupTasks.push({ hook, options });
   }
 
diff --git a/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.test.ts b/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.test.ts
index 8d2b2af3d5..91cb9031ae 100644
--- a/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.test.ts
+++ b/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.test.ts
@@ -44,4 +44,17 @@ describe('lifecycleService', () => {
     });
     await expect(service.shutdown()).resolves.toBeUndefined();
   });
+
+  it('should reject hooks after trigger', async () => {
+    const service = new BackendLifecycleImpl(getVoidLogger());
+    await service.startup();
+    expect(() => {
+      service.addStartupHook(() => {});
+    }).toThrow('Attempted to add startup hook after startup');
+
+    await service.shutdown();
+    expect(() => {
+      service.addShutdownHook(() => {});
+    }).toThrow('Attempted to add shutdown hook after shutdown');
+  });
 });
diff --git a/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.ts b/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.ts
index 39e66458c3..197f99b97a 100644
--- a/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.ts
+++ b/packages/backend-app-api/src/services/implementations/rootLifecycle/rootLifecycleServiceFactory.ts
@@ -39,6 +39,9 @@ export class BackendLifecycleImpl implements RootLifecycleService {
     hook: LifecycleServiceStartupHook,
     options?: LifecycleServiceStartupOptions,
   ): void {
+    if (this.#hasStarted) {
+      throw new Error('Attempted to add startup hook after startup');
+    }
     this.#startupTasks.push({ hook, options });
   }
 
@@ -72,6 +75,9 @@ export class BackendLifecycleImpl implements RootLifecycleService {
     hook: LifecycleServiceShutdownHook,
     options?: LifecycleServiceShutdownOptions,
   ): void {
+    if (this.#hasShutdown) {
+      throw new Error('Attempted to add shutdown hook after shutdown');
+    }
     this.#shutdownTasks.push({ hook, options });
   }