diff --git a/.travis.yml b/.travis.yml
index 4281367..5ad0e96 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ sudo: required
 go:
   - "1.12"
   - "1.13"
+  - "1.14"
   - master
 
 script:
diff --git a/go.mod b/go.mod
index 927e9a5..a1e31a8 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.12
 
 require (
 	github.com/json-iterator/go v1.1.9
-	github.com/stretchr/testify v1.4.0
-	github.com/vicanso/elton v0.2.3
+	github.com/stretchr/testify v1.5.1
+	github.com/vicanso/elton v0.3.0
 	github.com/vicanso/hes v0.2.1
 )
diff --git a/go.sum b/go.sum
index 40621a3..1d84373 100644
--- a/go.sum
+++ b/go.sum
@@ -14,10 +14,11 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/vicanso/elton v0.2.3 h1:XQskGFtw/hhtNXRU7dLX0OFcpG64pK4PMXh9CVjHVbA=
-github.com/vicanso/elton v0.2.3/go.mod h1:QFZ+Un4LLBANtl0mExkqLD4uqw3JLA2ZCWUHaCsHOUg=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/vicanso/elton v0.3.0 h1:3Ap/baOup8XpdpONZtAylXYUl7GNlkPIBUxZZDdEcTk=
+github.com/vicanso/elton v0.3.0/go.mod h1:QFZ+Un4LLBANtl0mExkqLD4uqw3JLA2ZCWUHaCsHOUg=
 github.com/vicanso/hes v0.2.1 h1:jRFEADmiQ30koVY/sKwlkhyXM5B3QbVVizLqrjNJgPw=
 github.com/vicanso/hes v0.2.1/go.mod h1:QcxOFmFfBQMhASTaLgnFayXYCgevdSeBVprt+o+3eKo=
 github.com/vicanso/intranet-ip v0.0.1 h1:cYS+mExFsKqewWSuHtFwAqw/CO66GsheB/P1BPmSTx0=