diff --git a/helpers.go b/helpers.go
index e3b1348..a761503 100644
--- a/helpers.go
+++ b/helpers.go
@@ -75,7 +75,7 @@ func writeStdinLinesOrNothing(ch chan string) (hasStdinLines bool) {
 		// piped
 		go func() {
 			scanner := bufio.NewScanner(os.Stdin)
-			scanner.Buffer(make([]byte, 16*1024), 256*1024)
+			scanner.Buffer(make([]byte, 16*1024*1024), 256*1024*1024)
 			hasEmittedAtLeastOne := false
 			for scanner.Scan() {
 				ch <- strings.TrimSpace(scanner.Text())