diff --git a/README.md b/README.md
index f41ca07..85d91fa 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ Package ants implements a fixed goroutine pool for managing and recycling a mass
 ## Features:
 
 - Automatically managing and recycling a massive number of goroutines.
+- Periodically clearing overdue goroutines.
 - Friendly interfaces: submitting tasks, getting the number of running goroutines, readjusting capacity of pool dynamically, closing pool.
 - Efficient in memory usage and it even achieves higher performance than unlimited goroutines in golang.
 
diff --git a/README_ZH.md b/README_ZH.md
index b39c7a0..ed6b5af 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -18,6 +18,7 @@
 ## 功能:
 
 - 实现了自动调度并发的goroutine，复用goroutine
+- 定时清理过期的goroutine，进一步节省资源
 - 提供了友好的接口：任务提交、获取运行中的协程数量、动态调整协程池大小
 - 资源复用，极大节省内存使用量；在大规模批量并发任务场景下比原生goroutine并发具有更高的性能