diff --git a/go.sum b/go.sum
index 79e15c5..2e05514 100644
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,8 @@
 github.com/DataDog/zstd v1.3.6-0.20190409195224-796139022798/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
 github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
+github.com/EagleChen/mapmutex v0.0.0-20180418073615-e1a5ae258d8d h1:j5hduAppx4gHqltfZ1cm7jHbXR0LuQulnF4VkBU8esw=
+github.com/EagleChen/mapmutex v0.0.0-20180418073615-e1a5ae258d8d/go.mod h1:H87WPRkM4YDLkW5tC6biLEzWaKtNse5xL1AR91FXC74=
 github.com/Shopify/sarama v1.23.1 h1:XxJBCZEoWJtoWjf/xRbmGUpAmTZGnuuF0ON0EvxxBrs=
 github.com/Shopify/sarama v1.23.1/go.mod h1:XLH1GYJnLVE0XCr6KdJGVJRTwY30moWNJ4sERjXX6fs=
 github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWsokNbMijUGhmcoBJc=