diff --git a/GNUmakefile b/GNUmakefile
index 32facbb..8bd3ac2 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -24,8 +24,8 @@ SRCS = $(shell git ls-files '*.go')
 PKGS =  ./config ./db ./models
 VERSION := $(shell git describe --tags --abbrev=0)
 REVISION := $(shell git rev-parse --short HEAD)
-LDFLAGS := -X 'github.com/kotakanbe/go-cpe-dictionary/config.Version=$(VERSION)' \
-	-X 'github.com/kotakanbe/go-cpe-dictionary/config.Revision=$(REVISION)'
+LDFLAGS := -X 'github.com/vulsio/go-cpe-dictionary/config.Version=$(VERSION)' \
+	-X 'github.com/vulsio/go-cpe-dictionary/config.Revision=$(REVISION)'
 GO := GO111MODULE=on go
 GO_OFF := GO111MODULE=off go
 
diff --git a/README.md b/README.md
index 81adc9b..e83ac2f 100644
--- a/README.md
+++ b/README.md
@@ -46,9 +46,9 @@ $ source /etc/profile.d/goenv.sh
 To install:
 
 ```bash
-$ mkdir -p $GOPATH/src/github.com/kotakanbe
-$ cd $GOPATH/src/github.com/kotakanbe
-$ git clone https://github.com/kotakanbe/go-cpe-dictionary.git
+$ mkdir -p $GOPATH/src/github.com/vulsio
+$ cd $GOPATH/src/github.com/vulsio
+$ git clone https://github.com/vulsio/go-cpe-dictionary.git
 $ cd go-cpe-dictionary
 $ make install
 ```
@@ -169,14 +169,14 @@ Run with --debug, --debug-sql option.
 
 # Authors
 
-kotakanbe ([@kotakanbe](https://twitter.com/kotakanbe)) created go-cpe-dictionary and [these fine people](https://github.com/kotakanbe/go-cpe-dictionary/graphs/contributors) have contributed.
+kotakanbe ([@kotakanbe](https://twitter.com/kotakanbe)) created go-cpe-dictionary and [these fine people](https://github.com/vulsio/go-cpe-dictionary/graphs/contributors) have contributed.
 
 ----
 
 # Contribute
 
-1. fork a repository: github.com/kotakanbe/go-cpe-dictionary to github.com/you/repo
-2. get original code: go get github.com/kotakanbe/go-cpe-dictionary
+1. fork a repository: github.com/vulsio/go-cpe-dictionary to github.com/you/repo
+2. get original code: go get github.com/vulsio/go-cpe-dictionary
 3. work on original code
 4. add remote to your repo: git remote add myfork https://github.com/you/repo.git
 5. push your changes: git push myfork
@@ -188,7 +188,7 @@ kotakanbe ([@kotakanbe](https://twitter.com/kotakanbe)) created go-cpe-dictionar
 
 # Licence
 
-Please see [LICENSE](https://github.com/kotakanbe/go-cpe-dictionary/blob/master/LICENSE).
+Please see [LICENSE](https://github.com/vulsio/go-cpe-dictionary/blob/master/LICENSE).
 
 ----
 
diff --git a/commands/fetchjvn.go b/commands/fetchjvn.go
index 9652aeb..ad4ea57 100644
--- a/commands/fetchjvn.go
+++ b/commands/fetchjvn.go
@@ -4,10 +4,10 @@ import (
 	"fmt"
 
 	"github.com/inconshreveable/log15"
-	"github.com/kotakanbe/go-cpe-dictionary/db"
-	"github.com/kotakanbe/go-cpe-dictionary/fetcher"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	"github.com/vulsio/go-cpe-dictionary/db"
+	"github.com/vulsio/go-cpe-dictionary/fetcher"
 )
 
 var fetchJvnCmd = &cobra.Command{
diff --git a/commands/fetchnvd.go b/commands/fetchnvd.go
index 1dbfc09..c059cf8 100644
--- a/commands/fetchnvd.go
+++ b/commands/fetchnvd.go
@@ -4,10 +4,10 @@ import (
 	"fmt"
 
 	"github.com/inconshreveable/log15"
-	"github.com/kotakanbe/go-cpe-dictionary/db"
-	"github.com/kotakanbe/go-cpe-dictionary/fetcher"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	"github.com/vulsio/go-cpe-dictionary/db"
+	"github.com/vulsio/go-cpe-dictionary/fetcher"
 )
 
 var fetchNvdCmd = &cobra.Command{
diff --git a/commands/root.go b/commands/root.go
index 61e9384..31976a9 100644
--- a/commands/root.go
+++ b/commands/root.go
@@ -6,10 +6,10 @@ import (
 	"path/filepath"
 
 	"github.com/inconshreveable/log15"
-	"github.com/kotakanbe/go-cpe-dictionary/util"
 	homedir "github.com/mitchellh/go-homedir"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	"github.com/vulsio/go-cpe-dictionary/util"
 )
 
 var cfgFile string
diff --git a/commands/server.go b/commands/server.go
index 40c4866..b99eb09 100644
--- a/commands/server.go
+++ b/commands/server.go
@@ -2,10 +2,10 @@ package commands
 
 import (
 	"github.com/inconshreveable/log15"
-	"github.com/kotakanbe/go-cpe-dictionary/db"
-	"github.com/kotakanbe/go-cpe-dictionary/server"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	"github.com/vulsio/go-cpe-dictionary/db"
+	"github.com/vulsio/go-cpe-dictionary/server"
 )
 
 var serverCmd = &cobra.Command{
diff --git a/db/common_test.go b/db/common_test.go
index 77522a2..890b0ef 100644
--- a/db/common_test.go
+++ b/db/common_test.go
@@ -7,7 +7,7 @@ import (
 
 	"github.com/knqyf263/go-cpe/common"
 	"github.com/knqyf263/go-cpe/naming"
-	"github.com/kotakanbe/go-cpe-dictionary/models"
+	"github.com/vulsio/go-cpe-dictionary/models"
 )
 
 func prepareTestData(driver DB) error {
diff --git a/db/db.go b/db/db.go
index 3bc9613..351b4dc 100644
--- a/db/db.go
+++ b/db/db.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 
 	"github.com/inconshreveable/log15"
-	"github.com/kotakanbe/go-cpe-dictionary/models"
+	"github.com/vulsio/go-cpe-dictionary/models"
 )
 
 // DB is interface for a database driver
diff --git a/db/rdb.go b/db/rdb.go
index 4da690a..01075f8 100644
--- a/db/rdb.go
+++ b/db/rdb.go
@@ -6,8 +6,8 @@ import (
 	"github.com/cheggaaa/pb/v3"
 	"github.com/jinzhu/gorm"
 	"github.com/k0kubun/pp"
-	"github.com/kotakanbe/go-cpe-dictionary/models"
 	sqlite3 "github.com/mattn/go-sqlite3"
+	"github.com/vulsio/go-cpe-dictionary/models"
 	"golang.org/x/xerrors"
 
 	// Required MySQL.  See http://jinzhu.me/gorm/database.html#connecting-to-a-database
diff --git a/db/redis.go b/db/redis.go
index 1612b48..dc9243c 100644
--- a/db/redis.go
+++ b/db/redis.go
@@ -8,8 +8,8 @@ import (
 	"github.com/cheggaaa/pb/v3"
 	"github.com/go-redis/redis/v8"
 	"github.com/inconshreveable/log15"
-	"github.com/kotakanbe/go-cpe-dictionary/models"
 	"github.com/spf13/viper"
+	"github.com/vulsio/go-cpe-dictionary/models"
 )
 
 const (
diff --git a/fetcher/jvn.go b/fetcher/jvn.go
index 4c7c7b4..186c63d 100644
--- a/fetcher/jvn.go
+++ b/fetcher/jvn.go
@@ -8,8 +8,8 @@ import (
 	"github.com/inconshreveable/log15"
 	"github.com/knqyf263/go-cpe/common"
 	"github.com/knqyf263/go-cpe/naming"
-	"github.com/kotakanbe/go-cpe-dictionary/models"
-	"github.com/kotakanbe/go-cpe-dictionary/util"
+	"github.com/vulsio/go-cpe-dictionary/models"
+	"github.com/vulsio/go-cpe-dictionary/util"
 )
 
 type rdf struct {
diff --git a/fetcher/nvd.go b/fetcher/nvd.go
index 40819b2..4fc8de2 100644
--- a/fetcher/nvd.go
+++ b/fetcher/nvd.go
@@ -13,10 +13,10 @@ import (
 	"github.com/inconshreveable/log15"
 	"github.com/knqyf263/go-cpe/common"
 	"github.com/knqyf263/go-cpe/naming"
-	"github.com/kotakanbe/go-cpe-dictionary/models"
-	"github.com/kotakanbe/go-cpe-dictionary/util"
 	"github.com/parnurzeal/gorequest"
 	"github.com/spf13/viper"
+	"github.com/vulsio/go-cpe-dictionary/models"
+	"github.com/vulsio/go-cpe-dictionary/util"
 )
 
 // CpeDictionary has cpe-item list
diff --git a/go.mod b/go.mod
index d274fca..3c9b87a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,11 +1,10 @@
-module github.com/kotakanbe/go-cpe-dictionary
+module github.com/vulsio/go-cpe-dictionary
 
-go 1.16
+go 1.17
 
 require (
 	github.com/VividCortex/ewma v1.2.0 // indirect
 	github.com/alicebob/miniredis/v2 v2.14.1
-	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d
 	github.com/cenkalti/backoff v2.2.1+incompatible
 	github.com/cheggaaa/pb/v3 v3.0.8
 	github.com/elazarl/goproxy v0.0.0-20200426045556-49ad98f6dac1 // indirect
@@ -37,3 +36,31 @@ require (
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
 	moul.io/http2curl v1.0.0 // indirect
 )
+
+require (
+	github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a // indirect
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/go-stack/stack v1.8.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/magiconair/properties v1.8.5 // indirect
+	github.com/mattn/go-colorable v0.1.8 // indirect
+	github.com/mitchellh/mapstructure v1.4.1 // indirect
+	github.com/pelletier/go-toml v1.9.3 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/spf13/afero v1.6.0 // indirect
+	github.com/spf13/cast v1.3.1 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/subosito/gotenv v1.2.0 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	go.opentelemetry.io/otel v1.0.0-RC1 // indirect
+	go.opentelemetry.io/otel/metric v0.21.0 // indirect
+	golang.org/x/text v0.3.6 // indirect
+	gopkg.in/ini.v1 v1.62.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)
diff --git a/go.sum b/go.sum
index ce59b55..f181f35 100644
--- a/go.sum
+++ b/go.sum
@@ -55,8 +55,6 @@ github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kd
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
-github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d h1:Byv0BzEl3/e6D5CLfI0j/7hiIEtvGVFPCZ7Ei2oq8iQ=
-github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
diff --git a/main.go b/main.go
index ea85faf..aa916a6 100644
--- a/main.go
+++ b/main.go
@@ -6,8 +6,8 @@ import (
 	"os"
 	"strings"
 
-	"github.com/kotakanbe/go-cpe-dictionary/commands"
-	"github.com/kotakanbe/go-cpe-dictionary/config"
+	"github.com/vulsio/go-cpe-dictionary/commands"
+	"github.com/vulsio/go-cpe-dictionary/config"
 )
 
 func main() {
diff --git a/server/server.go b/server/server.go
index 4a86014..fb58a7a 100644
--- a/server/server.go
+++ b/server/server.go
@@ -7,10 +7,10 @@ import (
 	"path/filepath"
 
 	"github.com/inconshreveable/log15"
-	"github.com/kotakanbe/go-cpe-dictionary/db"
 	"github.com/labstack/echo"
 	"github.com/labstack/echo/middleware"
 	"github.com/spf13/viper"
+	"github.com/vulsio/go-cpe-dictionary/db"
 )
 
 // Start starts CVE dictionary HTTP Server.