diff --git a/hello/src/lib.rs b/hello/src/lib.rs
index beca15f..fbcd7d0 100644
--- a/hello/src/lib.rs
+++ b/hello/src/lib.rs
@@ -1,4 +1,6 @@
 #![allow(warnings)]
+use std::thread;
+
 pub struct ThreadPool {
     threads: Vec<thread::JoinHandle<()>>,
 }