diff --git a/vendor/github.com/Shopify/sarama/message_set.go b/vendor/github.com/Shopify/sarama/message_set.go
index 600c7c4..6523ec2 100644
--- a/vendor/github.com/Shopify/sarama/message_set.go
+++ b/vendor/github.com/Shopify/sarama/message_set.go
@@ -29,7 +29,10 @@
 		return err
 	}
 
-	if err = pd.push(&lengthField{}); err != nil {
+	lengthDecoder := acquireLengthField()
+	defer releaseLengthField(lengthDecoder)
+
+	if err = pd.push(lengthDecoder); err != nil {
 		return err
 	}