diff --git a/src/main/java/com/knowledge/base/infrastructure/cache/impl/RedisFileCacheServiceImpl.java b/src/main/java/com/knowledge/base/infrastructure/cache/impl/RedisFileCacheServiceImpl.java
index 850c3f0..3a27e1e 100644
--- a/src/main/java/com/knowledge/base/infrastructure/cache/impl/RedisFileCacheServiceImpl.java
+++ b/src/main/java/com/knowledge/base/infrastructure/cache/impl/RedisFileCacheServiceImpl.java
@@ -5,6 +5,7 @@ import com.knowledge.base.infrastructure.cache.iface.FileCacheService;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.data.redis.core.Cursor;
 import org.springframework.data.redis.core.StringRedisTemplate;
 import org.springframework.stereotype.Service;
 
@@ -84,7 +85,7 @@ public class RedisFileCacheServiceImpl implements FileCacheService {
         Set<String> keySet = new HashSet<>();
         // 采用 scan，分批遍历，安全高效
         redisTemplate.execute((connection) -> {
-            try (var cursor = connection.scan(org.springframework.data.redis.core.ScanOptions.scanOptions()
+            try (Cursor<byte[]> cursor = connection.scan(org.springframework.data.redis.core.ScanOptions.scanOptions()
                     .match(pattern)
                     .count(1000)
                     .build())) {