diff --git a/grpc/tests/tonic.rs b/grpc/tests/tonic.rs
index 07d1387a..94e66181 100644
--- a/grpc/tests/tonic.rs
+++ b/grpc/tests/tonic.rs
@@ -101,7 +101,7 @@ async fn submit_blob() {
         .await
         .unwrap();
 
-    tokio::time::sleep(std::time::Duration::from_secs(3)).await;
+    tokio::time::sleep(std::time::Duration::from_secs(8)).await;
 
     let _submitted_tx = client
         .get_tx(response.txhash)