diff --git a/go.mod b/go.mod
index 67899dc..487a80f 100644
--- a/go.mod
+++ b/go.mod
@@ -9,6 +9,7 @@ require (
 	github.com/google/go-querystring v1.0.0 // indirect
 	github.com/hashicorp/go-version v1.2.0 // indirect
 	github.com/kenzo0107/sshkeygen v0.0.0-20190727143825-8bab90ec9499
+	github.com/kr/pretty v0.1.0 // indirect
 	github.com/ktr0731/go-fuzzyfinder v0.1.2
 	github.com/nsf/termbox-go v0.0.0-20190121233118-02980233997d
 	github.com/patrickmn/go-cache v2.1.0+incompatible
@@ -18,4 +19,5 @@ require (
 	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
 	golang.org/x/net v0.0.0-20190620200207-3b0461eec859 // indirect
 	golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756 // indirect
+	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 )
diff --git a/go.sum b/go.sum
index d5f10e6..08d1e8a 100644
--- a/go.sum
+++ b/go.sum
@@ -14,6 +14,11 @@ github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af h1:pmfjZENx5i
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
 github.com/kenzo0107/sshkeygen v0.0.0-20190727143825-8bab90ec9499 h1:l/8GV2dFHRPT4JhKm0Xiiqua0/Ti7DAEIBtcxaQod+k=
 github.com/kenzo0107/sshkeygen v0.0.0-20190727143825-8bab90ec9499/go.mod h1:7LIAU8QekHb9jOYMy3hLWeSMlIHJYiY6bJtK2JMiL7k=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/ktr0731/go-fuzzyfinder v0.1.2 h1:Y+Vm86X/QmE/+DitA2RrLndZU134cZtBUOtO18CTVcE=
 github.com/ktr0731/go-fuzzyfinder v0.1.2/go.mod h1:RzAqRU8h8f4uSLSP+THd87krOFnBploGlGn/8RQhd7M=
 github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
@@ -49,5 +54,7 @@ golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=