diff --git a/.drone.yml b/.drone.yml
deleted file mode 100644
index 1bb050e..0000000
--- a/.drone.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-kind: pipeline
-name: development
-
-steps:
-  - name: Check coding style
-    pull: never
-    image: drone/base:golangci-lint
-    depends_on: [ clone ]
-    commands:
-      - golangci-lint run ./...
-
-  - name: Unit test and build
-    pull: never
-    image: drone/base:gotest
-    depends_on: [ clone ]
-    commands:
-      - gotestsum ./... -v -cover -race
diff --git a/go.mod b/go.mod
index 58ad18f..29b7000 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.14
 
 require (
 	github.com/antonfisher/nested-logrus-formatter v1.3.1
-	github.com/free5gc/aper v1.0.2
-	github.com/free5gc/openapi v1.0.3
+	github.com/free5gc/aper v1.0.3
+	github.com/free5gc/openapi v1.0.4
 	github.com/sirupsen/logrus v1.8.1
 )
diff --git a/go.sum b/go.sum
index 6ce6ef4..bfaee64 100644
--- a/go.sum
+++ b/go.sum
@@ -49,10 +49,10 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/free5gc/aper v1.0.2 h1:ZIcD7EV8YICXPS6gnsjGqyN6n6Rggce/V3OiVCFJFhI=
-github.com/free5gc/aper v1.0.2/go.mod h1:3K/m47BIPR2xhBkuHD1unp2LnArVtt3iTI4De0bCqpI=
-github.com/free5gc/openapi v1.0.3 h1:9qpk4Qi1mHnUJsijAyg2TkuIU9E741+a10G6K7EVBJs=
-github.com/free5gc/openapi v1.0.3/go.mod h1:KRCnnp0GeK0Bl4gnrX79cQAidKXNENf8VRdG0y9R0Fc=
+github.com/free5gc/aper v1.0.3 h1:gY3EVU6Rr9eXwFgJVUZWXbbpIAhVlYHV0aGh5TvPEtg=
+github.com/free5gc/aper v1.0.3/go.mod h1:3K/m47BIPR2xhBkuHD1unp2LnArVtt3iTI4De0bCqpI=
+github.com/free5gc/openapi v1.0.4 h1:bC6oqXy8Z+3e532xLMFmrTHvdyv4sNGDPezQSslw5gQ=
+github.com/free5gc/openapi v1.0.4/go.mod h1:KRCnnp0GeK0Bl4gnrX79cQAidKXNENf8VRdG0y9R0Fc=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=