diff --git a/.travis.yml b/.travis.yml
index cea05af3..a4c572aa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: go
 
 go:
-  - 1.x
+  - "1.10"
 
 after_success:
   - test -n "$TRAVIS_TAG" && curl -sL https://git.io/goreleaser | bash
diff --git a/Gopkg.lock b/Gopkg.lock
index 0c0763b7..dbedeeec 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -3,9 +3,12 @@
 
 [[projects]]
   name = "github.com/Azure/azure-sdk-for-go"
-  packages = ["storage"]
-  revision = "eae258195456be76b2ec9ad2ee2ab63cdda365d9"
-  version = "v12.2.0-beta"
+  packages = [
+    "storage",
+    "version"
+  ]
+  revision = "fbe7db0e3f9793ba3e5704efbab84f51436c136e"
+  version = "v18.0.0"
 
 [[projects]]
   name = "github.com/Azure/go-autorest"
@@ -15,8 +18,8 @@
     "autorest/azure",
     "autorest/date"
   ]
-  revision = "fc3b03a2d2d1f43fad3007038bd16f044f870722"
-  version = "v9.10.0"
+  revision = "1f7cd6cfe0adea687ad44a512dfe76140f804318"
+  version = "v10.12.0"
 
 [[projects]]
   name = "github.com/BurntSushi/toml"
@@ -27,8 +30,8 @@
 [[projects]]
   name = "github.com/asaskevich/govalidator"
   packages = ["."]
-  revision = "521b25f4b05fd26bec69d9dedeb8f9c9a83939a8"
-  version = "v8"
+  revision = "ccb8e960c48f04d6935e72476ae4a51028f9e22f"
+  version = "v9"
 
 [[projects]]
   name = "github.com/aws/aws-sdk-go"
@@ -43,6 +46,7 @@
     "aws/credentials/ec2rolecreds",
     "aws/credentials/endpointcreds",
     "aws/credentials/stscreds",
+    "aws/csm",
     "aws/defaults",
     "aws/ec2metadata",
     "aws/endpoints",
@@ -53,6 +57,8 @@
     "internal/sdkrand",
     "internal/shareddefaults",
     "private/protocol",
+    "private/protocol/eventstream",
+    "private/protocol/eventstream/eventstreamapi",
     "private/protocol/query",
     "private/protocol/query/queryutil",
     "private/protocol/rest",
@@ -61,8 +67,8 @@
     "service/s3",
     "service/sts"
   ]
-  revision = "bb206ce0d6a50da7807694a823aed5c601c57ce0"
-  version = "v1.13.23"
+  revision = "66e86be40287fdef6990768b65f713f4bce11deb"
+  version = "v1.14.23"
 
 [[projects]]
   name = "github.com/boltdb/bolt"
@@ -73,14 +79,14 @@
 [[projects]]
   name = "github.com/cenkalti/backoff"
   packages = ["."]
-  revision = "61153c768f31ee5f130071d08fc82b85208528de"
-  version = "v1.1.0"
+  revision = "2ea60e5f094469f9e65adb9cd103795b73ae743e"
+  version = "v2.0.0"
 
 [[projects]]
   branch = "master"
   name = "github.com/cheggaaa/pb"
   packages = ["."]
-  revision = "75a8cbd866a7bad0d4a3b2b8cb6cab48a1475155"
+  revision = "2af8bbdea9e99e83b3ac400d8f6b6d1b8cbbf338"
 
 [[projects]]
   name = "github.com/dgrijalva/jwt-go"
@@ -91,8 +97,8 @@
 [[projects]]
   name = "github.com/go-ini/ini"
   packages = ["."]
-  revision = "6333e38ac20b8949a8dd68baa3650f4dee8f39f0"
-  version = "v1.33.0"
+  revision = "06f5f3d67269ccec1fe5fe4134ba6e982984f7f5"
+  version = "v1.37.0"
 
 [[projects]]
   name = "github.com/go-redis/redis"
@@ -106,20 +112,32 @@
     "internal/singleflight",
     "internal/util"
   ]
-  revision = "877867d2845fbaf86798befe410b6ceb6f5c29a3"
-  version = "v6.10.2"
+  revision = "83fb42932f6145ce52df09860384a4653d2d332a"
+  version = "v6.12.0"
 
 [[projects]]
   name = "github.com/go-sql-driver/mysql"
   packages = ["."]
-  revision = "a0583e0143b1624142adab07e0e97fe106d99561"
-  version = "v1.3"
+  revision = "d523deb1b23d913de5bdada721a6071e71283618"
+  version = "v1.4.0"
+
+[[projects]]
+  name = "github.com/go-stack/stack"
+  packages = ["."]
+  revision = "259ab82a6cad3992b4e21ff5cac294ccb06474bc"
+  version = "v1.7.0"
 
 [[projects]]
   branch = "master"
   name = "github.com/google/subcommands"
   packages = ["."]
-  revision = "a3682377147edf596d303faabd89f81977b3f678"
+  revision = "5bae204cdfb2d92dcc333d56014bae6a2f6c58b1"
+
+[[projects]]
+  name = "github.com/gorilla/websocket"
+  packages = ["."]
+  revision = "ea4d1f681babbce9545c9c5f3d5194a789c89f5b"
+  version = "v1.2.0"
 
 [[projects]]
   branch = "master"
@@ -137,6 +155,12 @@
   packages = ["."]
   revision = "bf9dde6d0d2c004a008c27aaee91170c786f6db8"
 
+[[projects]]
+  name = "github.com/inconshreveable/log15"
+  packages = ["."]
+  revision = "0decfc6c20d9ca0ad143b0e89dcaa20f810b4fb3"
+  version = "v2.13"
+
 [[projects]]
   name = "github.com/jinzhu/gorm"
   packages = [
@@ -166,10 +190,10 @@
   version = "v0.3.0"
 
 [[projects]]
-  branch = "master"
   name = "github.com/k0kubun/pp"
   packages = ["."]
-  revision = "e057ee7a28277be4d2af303443b6da377768181f"
+  revision = "027a6d1765d673d337e687394dbe780dd64e2a1e"
+  version = "v2.3.0"
 
 [[projects]]
   branch = "master"
@@ -195,7 +219,7 @@
     "nvd",
     "util"
   ]
-  revision = "2a3c286d7d791fb75f0b0b9e81fae2bc2b558dc7"
+  revision = "4ee71e8b928d387bdedfd8f1a0c394bbd84f273e"
 
 [[projects]]
   name = "github.com/kotakanbe/go-pingscanner"
@@ -210,10 +234,10 @@
     "config",
     "db",
     "db/rdb",
-    "log",
-    "models"
+    "models",
+    "util"
   ]
-  revision = "5f6caf8e94afbd280b9d55026cef351cb24c0889"
+  revision = "f3255b2e6a0a38b88eaa25b5696d7e73868e46dc"
 
 [[projects]]
   branch = "master"
@@ -229,12 +253,13 @@
     "hstore",
     "oid"
   ]
-  revision = "d34b9ff171c21ad295489235aec8b6626023cd04"
+  revision = "90697d60dd844d5ef6ff15135d0203f65d2f53b8"
 
 [[projects]]
   name = "github.com/marstr/guid"
   packages = ["."]
-  revision = "8bdf7d1a087ccc975cf37dd6507da50698fd19ca"
+  revision = "8bd9a64bf37eb297b492a4101fb28e80ac0b290f"
+  version = "v1.1.0"
 
 [[projects]]
   name = "github.com/mattn/go-colorable"
@@ -257,8 +282,8 @@
 [[projects]]
   name = "github.com/mattn/go-sqlite3"
   packages = ["."]
-  revision = "6c771bb9887719704b210e87e934f08be014bdb1"
-  version = "v1.6.0"
+  revision = "25ecb14adfc7543176f7d85291ec7dba82c6f7e4"
+  version = "v1.9.0"
 
 [[projects]]
   branch = "master"
@@ -270,7 +295,7 @@
   branch = "master"
   name = "github.com/mitchellh/go-homedir"
   packages = ["."]
-  revision = "b8bc1bf767474819792c23f32d8286a45736f1c6"
+  revision = "3864e76763d94a6df2f9960b16a20a33da9f9a66"
 
 [[projects]]
   branch = "master"
@@ -281,14 +306,14 @@
 [[projects]]
   name = "github.com/nlopes/slack"
   packages = ["."]
-  revision = "c86337c0ef2486a15edd804355d9c73d2f2caed1"
-  version = "v0.1.0"
+  revision = "8ab4d0b364ef1e9af5d102531da20d5ec902b6c4"
+  version = "v0.2.0"
 
 [[projects]]
   branch = "master"
   name = "github.com/nsf/termbox-go"
   packages = ["."]
-  revision = "e2050e41c8847748ec5288741c0b19a8cb26d084"
+  revision = "5c94acc5e6eb520f1bcd183974e01171cc4c23b3"
 
 [[projects]]
   name = "github.com/parnurzeal/gorequest"
@@ -318,7 +343,7 @@
   branch = "master"
   name = "github.com/sirupsen/logrus"
   packages = ["."]
-  revision = "90150a8ed11b6ce285e77e8af2b0109559ce4777"
+  revision = "e54a77765aca7bbdd8e56c1c54f60579968b2dc9"
 
 [[projects]]
   branch = "master"
@@ -334,12 +359,13 @@
     "ed25519",
     "ed25519/internal/edwards25519",
     "internal/chacha20",
+    "internal/subtle",
     "poly1305",
     "ssh",
     "ssh/agent",
     "ssh/terminal"
   ]
-  revision = "88942b9c40a4c9d203b82b3731787b672d6e809b"
+  revision = "a49355c7e3f8fe157a85be2f77e6e269a0f89602"
 
 [[projects]]
   branch = "master"
@@ -347,10 +373,9 @@
   packages = [
     "context",
     "idna",
-    "publicsuffix",
-    "websocket"
+    "publicsuffix"
   ]
-  revision = "6078986fec03a1dcc236c34816c71b0e05018fda"
+  revision = "292b43bbf7cb8d35ddf40f8d5100ef3837cced3f"
 
 [[projects]]
   branch = "master"
@@ -359,7 +384,7 @@
     "unix",
     "windows"
   ]
-  revision = "13d03a9a82fba647c21a0ef8fba44a795d0f0835"
+  revision = "1b2967e3c290b7c545b3db0deeda16e9be4f98a2"
 
 [[projects]]
   name = "golang.org/x/text"
@@ -382,9 +407,15 @@
   revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
   version = "v0.3.0"
 
+[[projects]]
+  name = "google.golang.org/appengine"
+  packages = ["cloudsql"]
+  revision = "b1f26356af11148e710935ed1ac8a7f5702c7612"
+  version = "v1.1.0"
+
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "6f9e0e0abf431f853507394b28b24360e764850217a4bc8e6bdf300b34891dd2"
+  inputs-digest = "c2bf4688a14aeb3a7f15a2e0181cc5f9552b5a9cab02ed915f39cf432925462d"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index 1da6d27b..e16cb9cb 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -1,6 +1,6 @@
 # Gopkg.toml example
 #
-# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
 # for detailed Gopkg.toml documentation.
 #
 # required = ["github.com/user/thing/cmd/thing"]
@@ -16,13 +16,18 @@
 #   source = "github.com/myfork/project2"
 #
 # [[override]]
-#  name = "github.com/x/y"
-#  version = "2.4.0"
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
 
 
 [[constraint]]
   name = "github.com/Azure/azure-sdk-for-go"
-  version = "12.2.0-beta"
+  version = "18.0.0"
 
 [[constraint]]
   name = "github.com/BurntSushi/toml"
@@ -30,11 +35,11 @@
 
 [[constraint]]
   name = "github.com/asaskevich/govalidator"
-  version = "8.0.0"
+  version = "9.0.0"
 
 [[constraint]]
   name = "github.com/aws/aws-sdk-go"
-  version = "1.12.67"
+  version = "1.14.23"
 
 [[constraint]]
   name = "github.com/boltdb/bolt"
@@ -42,7 +47,7 @@
 
 [[constraint]]
   name = "github.com/cenkalti/backoff"
-  version = "1.1.0"
+  version = "2.0.0"
 
 [[constraint]]
   branch = "master"
@@ -61,8 +66,8 @@
   version = "0.3.0"
 
 [[constraint]]
-  branch = "master"
   name = "github.com/k0kubun/pp"
+  version = "2.3.0"
 
 [[constraint]]
   branch = "master"
@@ -88,17 +93,25 @@
   branch = "master"
   name = "github.com/kotakanbe/logrus-prefixed-formatter"
 
+[[constraint]]
+  branch = "master"
+  name = "github.com/mitchellh/go-homedir"
+
 [[constraint]]
   name = "github.com/nlopes/slack"
-  version = "0.1.0"
+  version = "0.2.0"
 
 [[constraint]]
   name = "github.com/parnurzeal/gorequest"
   version = "0.2.15"
 
+[[constraint]]
+  name = "github.com/pkg/errors"
+  version = "0.8.0"
+
 [[constraint]]
   name = "github.com/rifflock/lfshook"
-  version = "2.2.0"
+  version = "2.3.0"
 
 [[constraint]]
   branch = "master"
@@ -108,6 +121,6 @@
   branch = "master"
   name = "golang.org/x/crypto"
 
-[[constraint]]
-  branch = "master"
-  name = "github.com/mitchellh/go-homedir"
+[prune]
+  go-tests = true
+  unused-packages = true
diff --git a/oval/oval.go b/oval/oval.go
index 05c09c35..2442505e 100644
--- a/oval/oval.go
+++ b/oval/oval.go
@@ -27,7 +27,6 @@ import (
 	"github.com/future-architect/vuls/models"
 	"github.com/future-architect/vuls/util"
 	"github.com/kotakanbe/goval-dictionary/db"
-	ovallog "github.com/kotakanbe/goval-dictionary/log"
 	"github.com/parnurzeal/gorequest"
 )
 
@@ -67,10 +66,9 @@ func (b Base) CheckHTTPHealth() error {
 
 // CheckIfOvalFetched checks if oval entries are in DB by family, release.
 func (b Base) CheckIfOvalFetched(osFamily, release string) (fetched bool, err error) {
-	ovallog.Initialize(config.Conf.LogDir)
 	if !b.isFetchViaHTTP() {
 		var ovaldb db.DB
-		if ovaldb, err = db.NewDB(
+		if ovaldb, _, err = db.NewDB(
 			osFamily,
 			config.Conf.OvalDBType,
 			config.Conf.OvalDBPath,
@@ -103,11 +101,10 @@ func (b Base) CheckIfOvalFetched(osFamily, release string) (fetched bool, err er
 
 // CheckIfOvalFresh checks if oval entries are fresh enough
 func (b Base) CheckIfOvalFresh(osFamily, release string) (ok bool, err error) {
-	ovallog.Initialize(config.Conf.LogDir)
 	var lastModified time.Time
 	if !b.isFetchViaHTTP() {
 		var ovaldb db.DB
-		if ovaldb, err = db.NewDB(
+		if ovaldb, _, err = db.NewDB(
 			osFamily,
 			config.Conf.OvalDBType,
 			config.Conf.OvalDBPath,
diff --git a/oval/util.go b/oval/util.go
index 3485ee0a..2e270f6c 100644
--- a/oval/util.go
+++ b/oval/util.go
@@ -32,7 +32,6 @@ import (
 	debver "github.com/knqyf263/go-deb-version"
 	rpmver "github.com/knqyf263/go-rpm-version"
 	"github.com/kotakanbe/goval-dictionary/db"
-	ovallog "github.com/kotakanbe/goval-dictionary/log"
 	ovalmodels "github.com/kotakanbe/goval-dictionary/models"
 	"github.com/parnurzeal/gorequest"
 )
@@ -218,7 +217,6 @@ func httpGet(url string, req request, resChan chan<- response, errChan chan<- er
 }
 
 func getDefsByPackNameFromOvalDB(r *models.ScanResult) (relatedDefs ovalResult, err error) {
-	ovallog.Initialize(config.Conf.LogDir)
 	path := config.Conf.OvalDBURL
 	if config.Conf.OvalDBType == "sqlite3" {
 		path = config.Conf.OvalDBPath
@@ -226,7 +224,7 @@ func getDefsByPackNameFromOvalDB(r *models.ScanResult) (relatedDefs ovalResult,
 	util.Log.Debugf("Open oval-dictionary db (%s): %s", config.Conf.OvalDBType, path)
 
 	var ovaldb db.DB
-	if ovaldb, err = db.NewDB(r.Family, config.Conf.OvalDBType,
+	if ovaldb, _, err = db.NewDB(r.Family, config.Conf.OvalDBType,
 		path, config.Conf.DebugSQL); err != nil {
 		return
 	}