diff --git a/crates/openshell-server/src/grpc/sandbox.rs b/crates/openshell-server/src/grpc/sandbox.rs
index 57bf421b88..c87fc01436 100644
--- a/crates/openshell-server/src/grpc/sandbox.rs
+++ b/crates/openshell-server/src/grpc/sandbox.rs
@@ -2477,9 +2477,9 @@ mod tests {
             )
             .await
         });
-        tokio::time::timeout(std::time::Duration::from_secs(1), async {
+        tokio::time::timeout(std::time::Duration::from_secs(5), async {
             while state.compute.delete_gate_entry_count() == 0 {
-                tokio::task::yield_now().await;
+                tokio::time::sleep(std::time::Duration::from_millis(10)).await;
             }
         })
         .await