diff --git a/discovery/syncer.go b/discovery/syncer.go
index b27cc8c71..ccea2dc29 100644
--- a/discovery/syncer.go
+++ b/discovery/syncer.go
@@ -175,7 +175,7 @@ const (
 	requestBatchSize = 500
 
 	// syncerBufferSize is the size of the syncer's buffers.
-	syncerBufferSize = 5
+	syncerBufferSize = 50
 )
 
 var (