diff --git a/vendor/github.com/Shopify/sarama/encoder_decoder.go b/vendor/github.com/Shopify/sarama/encoder_decoder.go
index 7ce3bc0..dab54f8 100644
--- a/vendor/github.com/Shopify/sarama/encoder_decoder.go
+++ b/vendor/github.com/Shopify/sarama/encoder_decoder.go
@@ -12,6 +12,11 @@
 	encode(pe packetEncoder) error
 }
 
+type encoderWithHeader interface {
+	encoder
+	headerVersion() int16
+}
+
 // Encode takes an Encoder and turns it into bytes while potentially recording metrics.
 func encode(e encoder, metricRegistry metrics.Registry) ([]byte, error) {
 	if e == nil {
@@ -40,7 +45,7 @@
 	return realEnc.raw, nil
 }
 
-// Decoder is the interface that wraps the basic Decode method.
+// decoder is the interface that wraps the basic Decode method.
 // Anything implementing Decoder can be extracted from bytes using Kafka's encoding rules.
 type decoder interface {
 	decode(pd packetDecoder) error
@@ -50,7 +55,7 @@
 	decode(pd packetDecoder, version int16) error
 }
 
-// Decode takes bytes and a Decoder and fills the fields of the decoder from the bytes,
+// decode takes bytes and a decoder and fills the fields of the decoder from the bytes,
 // interpreted using Kafka's encoding rules.
 func decode(buf []byte, in decoder) error {
 	if buf == nil {