diff --git a/go.mod b/go.mod
index 8570195..e9d94c7 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.16
 
 require (
 	github.com/mitchellh/hashstructure v1.1.0
-	go.etcd.io/etcd/api/v3 v3.5.5
+	go.etcd.io/etcd/api/v3 v3.5.6
 	go.etcd.io/etcd/client/v3 v3.5.5
 	go.uber.org/zap v1.23.0
 	go.unistack.org/micro/v3 v3.9.15
diff --git a/go.sum b/go.sum
index 6eba8e1..7956f99 100644
--- a/go.sum
+++ b/go.sum
@@ -160,8 +160,9 @@ github.com/xeipuuv/gojsonschema v1.2.0/go.mod h1:anYRn/JVcOK2ZgGU+IjEV4nwlhoK5sQ
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
-go.etcd.io/etcd/api/v3 v3.5.5 h1:BX4JIbQ7hl7+jL+g+2j5UAr0o1bctCm6/Ct+ArBGkf0=
 go.etcd.io/etcd/api/v3 v3.5.5/go.mod h1:KFtNaxGDw4Yx/BA4iPPwevUTAuqcsPxzyX8PHydchN8=
+go.etcd.io/etcd/api/v3 v3.5.6 h1:Cy2qx3npLcYqTKqGJzMypnMv2tiRyifZJ17BlWIWA7A=
+go.etcd.io/etcd/api/v3 v3.5.6/go.mod h1:KFtNaxGDw4Yx/BA4iPPwevUTAuqcsPxzyX8PHydchN8=
 go.etcd.io/etcd/client/pkg/v3 v3.5.5 h1:9S0JUVvmrVl7wCF39iTQthdaaNIiAaQbmK75ogO6GU8=
 go.etcd.io/etcd/client/pkg/v3 v3.5.5/go.mod h1:ggrwbk069qxpKPq8/FKkQ3Xq9y39kbFR4LnKszpRXeQ=
 go.etcd.io/etcd/client/v3 v3.5.5 h1:q++2WTJbUgpQu4B6hCuT7VkdwaTP7Qz6Daak3WzbrlI=