diff --git a/vendor/github.com/Shopify/sarama/real_decoder.go b/vendor/github.com/Shopify/sarama/real_decoder.go
index 23045e7..085cbb3 100644
--- a/vendor/github.com/Shopify/sarama/real_decoder.go
+++ b/vendor/github.com/Shopify/sarama/real_decoder.go
@@ -290,6 +290,14 @@
 	return &realDecoder{raw: rd.raw[off : off+length]}, nil
 }
 
+func (rd *realDecoder) peekInt8(offset int) (int8, error) {
+	const byteLen = 1
+	if rd.remaining() < offset+byteLen {
+		return -1, ErrInsufficientData
+	}
+	return int8(rd.raw[rd.off+offset]), nil
+}
+
 // stacks
 
 func (rd *realDecoder) push(in pushDecoder) error {