diff --git a/quickwit/quickwit-search/src/lib.rs b/quickwit/quickwit-search/src/lib.rs
index b5e7a881c08..6fe6d61de4c 100644
--- a/quickwit/quickwit-search/src/lib.rs
+++ b/quickwit/quickwit-search/src/lib.rs
@@ -97,7 +97,8 @@ pub type SearcherPool = Pool<SocketAddr, SearchServiceClient>;
 
 fn search_thread_pool() -> &'static ThreadPool {
     static SEARCH_THREAD_POOL: OnceLock<ThreadPool> = OnceLock::new();
-    SEARCH_THREAD_POOL.get_or_init(|| ThreadPool::new("search", None))
+    let search_thread_pool_size = quickwit_common::get_from_env_opt("QW_SEARCH_THREAD_POOL_SIZE");
+    SEARCH_THREAD_POOL.get_or_init(|| ThreadPool::new("search", search_thread_pool_size))
 }
 
 /// GlobalDocAddress serves as a hit address.