diff --git a/packages/backend/server/src/core/storage/wrappers/avatar.ts b/packages/backend/server/src/core/storage/wrappers/avatar.ts
index 388c1f024..6a1c1f040 100644
--- a/packages/backend/server/src/core/storage/wrappers/avatar.ts
+++ b/packages/backend/server/src/core/storage/wrappers/avatar.ts
@@ -14,7 +14,7 @@ import {
 
 @Injectable()
 export class AvatarStorage {
-  private provider: StorageProvider;
+  private provider!: StorageProvider;
 
   get config() {
     return this.AFFiNEConfig.storages.avatar;
@@ -24,10 +24,20 @@ export class AvatarStorage {
     private readonly AFFiNEConfig: Config,
     private readonly url: URLHelper,
     private readonly storageFactory: StorageProviderFactory
-  ) {
+  ) {}
+
+  @OnEvent('config.init')
+  async onConfigInit() {
     this.provider = this.storageFactory.create(this.config.storage);
   }
 
+  @OnEvent('config.changed')
+  async onConfigChanged(event: Events['config.changed']) {
+    if (event.updates.storages?.avatar?.storage) {
+      this.provider = this.storageFactory.create(this.config.storage);
+    }
+  }
+
   async put(key: string, blob: BlobInputType, metadata?: PutObjectMetadata) {
     await this.provider.put(key, blob, metadata);
     let link = this.config.publicPath + key;
@@ -53,11 +63,4 @@ export class AvatarStorage {
       await this.delete(user.avatarUrl);
     }
   }
-
-  @OnEvent('config.changed')
-  async onConfigChanged(event: Events['config.changed']) {
-    if (event.updates.storages?.avatar?.storage) {
-      this.provider = this.storageFactory.create(this.config.storage);
-    }
-  }
 }
diff --git a/packages/backend/server/src/core/storage/wrappers/blob.ts b/packages/backend/server/src/core/storage/wrappers/blob.ts
index dd5fea880..bb0e73c22 100644
--- a/packages/backend/server/src/core/storage/wrappers/blob.ts
+++ b/packages/backend/server/src/core/storage/wrappers/blob.ts
@@ -30,7 +30,7 @@ declare global {
 @Injectable()
 export class WorkspaceBlobStorage {
   private readonly logger = new Logger(WorkspaceBlobStorage.name);
-  private provider: StorageProvider;
+  private provider!: StorageProvider;
 
   get config() {
     return this.AFFiNEConfig.storages.blob;
@@ -42,10 +42,20 @@ export class WorkspaceBlobStorage {
     private readonly storageFactory: StorageProviderFactory,
     private readonly db: PrismaClient,
     private readonly url: URLHelper
-  ) {
+  ) {}
+
+  @OnEvent('config.init')
+  async onConfigInit() {
     this.provider = this.storageFactory.create(this.config.storage);
   }
 
+  @OnEvent('config.changed')
+  async onConfigChanged(event: Events['config.changed']) {
+    if (event.updates.storages?.blob?.storage) {
+      this.provider = this.storageFactory.create(this.config.storage);
+    }
+  }
+
   async put(workspaceId: string, key: string, blob: Buffer) {
     const meta: PutObjectMetadata = autoMetadata(blob);
 
@@ -229,11 +239,4 @@ export class WorkspaceBlobStorage {
   }: Events['workspace.blob.delete']) {
     await this.delete(workspaceId, key, true);
   }
-
-  @OnEvent('config.changed')
-  async onConfigChanged(event: Events['config.changed']) {
-    if (event.updates.storages?.blob?.storage) {
-      this.provider = this.storageFactory.create(this.config.storage);
-    }
-  }
 }
diff --git a/packages/backend/server/src/plugins/copilot/storage.ts b/packages/backend/server/src/plugins/copilot/storage.ts
index 12b2fb613..90813809e 100644
--- a/packages/backend/server/src/plugins/copilot/storage.ts
+++ b/packages/backend/server/src/plugins/copilot/storage.ts
@@ -8,6 +8,7 @@ import {
   CallMetric,
   Config,
   type FileUpload,
+  OnEvent,
   readBuffer,
   type StorageProvider,
   StorageProviderFactory,
@@ -17,17 +18,27 @@ import { QuotaService } from '../../core/quota';
 
 @Injectable()
 export class CopilotStorage {
-  public readonly provider: StorageProvider;
+  public provider!: StorageProvider;
 
   constructor(
     private readonly config: Config,
     private readonly url: URLHelper,
     private readonly storageFactory: StorageProviderFactory,
     private readonly quota: QuotaService
-  ) {
+  ) {}
+
+  @OnEvent('config.init')
+  async onConfigInit() {
     this.provider = this.storageFactory.create(this.config.copilot.storage);
   }
 
+  @OnEvent('config.changed')
+  async onConfigChanged(event: Events['config.changed']) {
+    if (event.updates?.copilot?.storage) {
+      this.provider = this.storageFactory.create(this.config.copilot.storage);
+    }
+  }
+
   @CallMetric('ai', 'blob_put')
   async put(
     userId: string,