diff --git a/app/services/cache/v2/project_date_rank_service.rb b/app/services/cache/v2/project_date_rank_service.rb
index 2ada442a8..9df69bbb4 100644
--- a/app/services/cache/v2/project_date_rank_service.rb
+++ b/app/services/cache/v2/project_date_rank_service.rb
@@ -67,5 +67,9 @@ class Cache::V2::ProjectDateRankService < ApplicationService
     end
 
     $redis_cache.zscore(project_rank_key, @project_id)
+
+    # 设置过期时间（一个月）
+    $redis_cache.expireat(project_rank_key, (@rank_date+30.days).to_time.to_i)
+    $redis_cache.expireat(project_rank_statistic_key, (@rank_date+30.days).to_time.to_i)
   end
 end
\ No newline at end of file
diff --git a/app/services/cache/v2/user_date_rank_service.rb b/app/services/cache/v2/user_date_rank_service.rb
index a3351b724..b669e4d67 100644
--- a/app/services/cache/v2/user_date_rank_service.rb
+++ b/app/services/cache/v2/user_date_rank_service.rb
@@ -115,5 +115,9 @@ class Cache::V2::UserDateRankService < ApplicationService
     $redis_cache.zadd(user_rank_key, score-300, @user_id) if score > 300
 
     $redis_cache.zscore(user_rank_key, @user_id)
+
+    # 设置过期时间（一个月）
+    $redis_cache.expireat(user_rank_key, (@rank_date+30.days).to_time.to_i)
+    $redis_cache.expireat(user_date_statistic_key, (@rank_date+30.days).to_time.to_i)
   end
 end
\ No newline at end of file