diff --git a/packages/backend/src/core/SponsorsService.ts b/packages/backend/src/core/SponsorsService.ts
index 6846df3554..df3e40fbd4 100644
--- a/packages/backend/src/core/SponsorsService.ts
+++ b/packages/backend/src/core/SponsorsService.ts
@@ -12,13 +12,15 @@ import { bindThis } from '@/decorators.js';
 
 @Injectable()
 export class SponsorsService implements OnApplicationShutdown {
-	private cache: RedisKVCache<any>;
+	private cache: RedisKVCache<void[]>;
 
 	constructor(
-    @Inject(DI.redis) private redisClient: Redis.Redis,
+		@Inject(DI.redis)
+		private redisClient: Redis.Redis,
+		
 		private metaService: MetaService,
 	) {
-		this.cache = new RedisKVCache<any>(this.redisClient, 'sponsors', {
+		this.cache = new RedisKVCache<void[]>(this.redisClient, 'sponsors', {
 			lifetime: 1000 * 60 * 60,
 			memoryCacheLifetime: 1000 * 60,
 			fetcher: (key) => {
@@ -26,7 +28,7 @@ export class SponsorsService implements OnApplicationShutdown {
 				return this.fetchSharkeySponsors();
 			},
 			toRedisConverter: (value) => JSON.stringify(value),
-			fromRedisConverter: (value) => JSON.parse(value)
+			fromRedisConverter: (value) => JSON.parse(value),
 		});
 	}
 
diff --git a/packages/backend/src/server/api/endpoints/sponsors.ts b/packages/backend/src/server/api/endpoints/sponsors.ts
index fb6e51fd4e..2a8a461a8f 100644
--- a/packages/backend/src/server/api/endpoints/sponsors.ts
+++ b/packages/backend/src/server/api/endpoints/sponsors.ts
@@ -3,9 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { Inject, Injectable } from '@nestjs/common';
+import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import { DI } from '@/di-symbols.js';
 import { SponsorsService } from '@/core/SponsorsService.js';
 
 export const meta = {