diff --git a/src/checker.rs b/src/checker.rs
index e827adc..cef4768 100644
--- a/src/checker.rs
+++ b/src/checker.rs
@@ -85,6 +85,8 @@ pub async fn check_all<R: reqwest::dns::Resolve + 'static>(
         }
     }
 
+    drop(join_set);
+
     Ok(Arc::into_inner(checked_proxies)
         .ok_or_eyre("failed to unwrap Arc")?
         .into_inner())