diff --git a/reader/reader.go b/reader/reader.go
index d34dc68..b724cbb 100644
--- a/reader/reader.go
+++ b/reader/reader.go
@@ -9,7 +9,7 @@ import (
 	"sync"
 )
 
-const maxBytes = 10000
+const maxBytes = 40000
 const batchSize = 128
 
 func min(a, b int) int {