diff --git a/go.mod b/go.mod
index 2fd2603..f483e0d 100644
--- a/go.mod
+++ b/go.mod
@@ -7,11 +7,11 @@
 	github.com/aead/cmac v0.0.0-20160719120800-7af84192f0b1 // indirect
 	github.com/cboling/omci v0.1.0
 	github.com/deckarep/golang-set v1.7.1 // indirect
-	github.com/ghodss/yaml v1.0.0
 	github.com/golang/protobuf v1.3.2
 	github.com/google/gopacket v1.1.17
 	github.com/gorilla/mux v1.7.3
 	github.com/grpc-ecosystem/grpc-gateway v1.12.2
+	github.com/imdario/mergo v0.3.11
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/jhump/protoreflect v1.5.0
 	github.com/jpillora/backoff v1.0.0
@@ -24,6 +24,6 @@
 	github.com/sirupsen/logrus v1.4.2
 	google.golang.org/genproto v0.0.0-20190927181202-20e1ac93f88c
 	google.golang.org/grpc v1.27.0
-	gopkg.in/yaml.v2 v2.2.8
+	gopkg.in/yaml.v2 v2.3.0
 	gotest.tools v2.2.0+incompatible
 )