diff --git a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go
index 73efc30..199ee62 100644
--- a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go
+++ b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go
@@ -4537,7 +4537,7 @@
 	AuthDisable(ctx context.Context, in *AuthDisableRequest, opts ...grpc.CallOption) (*AuthDisableResponse, error)
 	// Authenticate processes an authenticate request.
 	Authenticate(ctx context.Context, in *AuthenticateRequest, opts ...grpc.CallOption) (*AuthenticateResponse, error)
-	// UserAdd adds a new user.
+	// UserAdd adds a new user. User name cannot be empty.
 	UserAdd(ctx context.Context, in *AuthUserAddRequest, opts ...grpc.CallOption) (*AuthUserAddResponse, error)
 	// UserGet gets detailed user information.
 	UserGet(ctx context.Context, in *AuthUserGetRequest, opts ...grpc.CallOption) (*AuthUserGetResponse, error)
@@ -4551,7 +4551,7 @@
 	UserGrantRole(ctx context.Context, in *AuthUserGrantRoleRequest, opts ...grpc.CallOption) (*AuthUserGrantRoleResponse, error)
 	// UserRevokeRole revokes a role of specified user.
 	UserRevokeRole(ctx context.Context, in *AuthUserRevokeRoleRequest, opts ...grpc.CallOption) (*AuthUserRevokeRoleResponse, error)
-	// RoleAdd adds a new role.
+	// RoleAdd adds a new role. Role name cannot be empty.
 	RoleAdd(ctx context.Context, in *AuthRoleAddRequest, opts ...grpc.CallOption) (*AuthRoleAddResponse, error)
 	// RoleGet gets detailed role information.
 	RoleGet(ctx context.Context, in *AuthRoleGetRequest, opts ...grpc.CallOption) (*AuthRoleGetResponse, error)
@@ -4726,7 +4726,7 @@
 	AuthDisable(context.Context, *AuthDisableRequest) (*AuthDisableResponse, error)
 	// Authenticate processes an authenticate request.
 	Authenticate(context.Context, *AuthenticateRequest) (*AuthenticateResponse, error)
-	// UserAdd adds a new user.
+	// UserAdd adds a new user. User name cannot be empty.
 	UserAdd(context.Context, *AuthUserAddRequest) (*AuthUserAddResponse, error)
 	// UserGet gets detailed user information.
 	UserGet(context.Context, *AuthUserGetRequest) (*AuthUserGetResponse, error)
@@ -4740,7 +4740,7 @@
 	UserGrantRole(context.Context, *AuthUserGrantRoleRequest) (*AuthUserGrantRoleResponse, error)
 	// UserRevokeRole revokes a role of specified user.
 	UserRevokeRole(context.Context, *AuthUserRevokeRoleRequest) (*AuthUserRevokeRoleResponse, error)
-	// RoleAdd adds a new role.
+	// RoleAdd adds a new role. Role name cannot be empty.
 	RoleAdd(context.Context, *AuthRoleAddRequest) (*AuthRoleAddResponse, error)
 	// RoleGet gets detailed role information.
 	RoleGet(context.Context, *AuthRoleGetRequest) (*AuthRoleGetResponse, error)
diff --git a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto
index 565f8fa..423eaba 100644
--- a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto
+++ b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto
@@ -264,7 +264,7 @@
     };
   }
 
-  // UserAdd adds a new user.
+  // UserAdd adds a new user. User name cannot be empty.
   rpc UserAdd(AuthUserAddRequest) returns (AuthUserAddResponse) {
       option (google.api.http) = {
         post: "/v3/auth/user/add"
@@ -320,7 +320,7 @@
     };
   }
 
-  // RoleAdd adds a new role.
+  // RoleAdd adds a new role. Role name cannot be empty.
   rpc RoleAdd(AuthRoleAddRequest) returns (AuthRoleAddResponse) {
       option (google.api.http) = {
         post: "/v3/auth/role/add"