diff --git a/.circleci/config.yml b/.circleci/config.yml
index b3bb30a..b925ff3 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,7 +1,6 @@
 version: 2
 jobs:
   test:
-    working_directory: /go/src/github.com/yukimochi/Activity-Relay
     docker:
       - image: circleci/golang
         environment:
@@ -13,8 +12,6 @@ jobs:
           name: build
           command: |
             go version
-            go get -u github.com/golang/dep/cmd/dep
-            dep ensure
             go test -coverprofile=coverage.txt -covermode=atomic -p 1 . ./worker ./cli ./State
             bash <(curl -s https://codecov.io/bash)
   docker:
diff --git a/Dockerfile b/Dockerfile
index cd73211..6defd0c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,10 @@
 FROM golang:alpine AS build
 
-WORKDIR /go/src/github.com/yukimochi/Activity-Relay
-COPY . /go/src/github.com/yukimochi/Activity-Relay
+WORKDIR /Activity-Relay
+COPY . /Activity-Relay
 
 RUN  mkdir -p /rootfs/usr/bin && \
      apk add -U --no-cache git && \
-     go get -u github.com/golang/dep/cmd/dep && \
-     dep ensure && \
      go build -o /rootfs/usr/bin/server . && \
      go build -o /rootfs/usr/bin/worker ./worker && \
      go build -o /rootfs/usr/bin/ar-cli ./cli
diff --git a/Gopkg.lock b/Gopkg.lock
deleted file mode 100644
index 3299752..0000000
--- a/Gopkg.lock
+++ /dev/null
@@ -1,671 +0,0 @@
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-  pruneopts = "UT"
-  revision = "e225da77a7e68af35c70ccbf71af2b83e6acac3c"
-
-[[projects]]
-  branch = "master"
-  digest = "1:d78755393cc6ee9bd63b4debeed9be209517adc3296e61ecdf97590b15260f45"
-  name = "golang.org/x/sys"
-  packages = [
-    "cpu",
-    "unix",
-  ]
-  pruneopts = "UT"
-  revision = "4b34438f7a67ee5f45cc6132e2bad873a20324e9"
-
-[[projects]]
-  digest = "1:a2ab62866c75542dd18d2b069fec854577a20211d7c0ea6ae746072a1dccdd18"
-  name = "golang.org/x/text"
-  packages = [
-    "collate",
-    "collate/build",
-    "internal/colltab",
-    "internal/gen",
-    "internal/tag",
-    "internal/triegen",
-    "internal/ucd",
-    "language",
-    "secure/bidirule",
-    "transform",
-    "unicode/bidi",
-    "unicode/cldr",
-    "unicode/norm",
-    "unicode/rangetable",
-  ]
-  pruneopts = "UT"
-  revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
-  version = "v0.3.0"
-
-[[projects]]
-  digest = "1:dd6e1a70c3d069cb58cb5cd234a6aca65c31b87eecce857b0b140aec96fcee91"
-  name = "google.golang.org/api"
-  packages = [
-    "googleapi/transport",
-    "internal",
-    "iterator",
-    "option",
-    "support/bundler",
-    "transport",
-    "transport/grpc",
-    "transport/http",
-    "transport/http/internal/propagation",
-  ]
-  pruneopts = "UT"
-  revision = "bce707a4d0ea3488942724b3bcc1c8338f38f991"
-  version = "v0.3.0"
-
-[[projects]]
-  digest = "1:15b86ee56687b2b842431678dacd1050900cd5ea24a47fa908ac32ce540664b7"
-  name = "google.golang.org/appengine"
-  packages = [
-    ".",
-    "internal",
-    "internal/app_identity",
-    "internal/base",
-    "internal/datastore",
-    "internal/log",
-    "internal/modules",
-    "internal/remote_api",
-    "internal/socket",
-    "internal/urlfetch",
-    "socket",
-    "urlfetch",
-  ]
-  pruneopts = "UT"
-  revision = "54a98f90d1c46b7731eb8fb305d2a321c30ef610"
-  version = "v1.5.0"
-
-[[projects]]
-  branch = "master"
-  digest = "1:3225a050ce9eb2c772c3f4a173b89dba31f78be26da6e12651b93a6836cbea50"
-  name = "google.golang.org/genproto"
-  packages = [
-    "googleapis/api/annotations",
-    "googleapis/iam/v1",
-    "googleapis/pubsub/v1",
-    "googleapis/rpc/status",
-    "protobuf/field_mask",
-  ]
-  pruneopts = "UT"
-  revision = "64821d5d210748c883cd2b809589555ae4654203"
-
-[[projects]]
-  digest = "1:4abdd62fcb53e7fb898e708754e3ec03254a870b35e826649b974c6811041808"
-  name = "google.golang.org/grpc"
-  packages = [
-    ".",
-    "balancer",
-    "balancer/base",
-    "balancer/roundrobin",
-    "binarylog/grpc_binarylog_v1",
-    "codes",
-    "connectivity",
-    "credentials",
-    "credentials/internal",
-    "credentials/oauth",
-    "encoding",
-    "encoding/proto",
-    "grpclog",
-    "internal",
-    "internal/backoff",
-    "internal/binarylog",
-    "internal/channelz",
-    "internal/envconfig",
-    "internal/grpcrand",
-    "internal/grpcsync",
-    "internal/syscall",
-    "internal/transport",
-    "keepalive",
-    "metadata",
-    "naming",
-    "peer",
-    "resolver",
-    "resolver/dns",
-    "resolver/passthrough",
-    "stats",
-    "status",
-    "tap",
-  ]
-  pruneopts = "UT"
-  revision = "3507fb8e1a5ad030303c106fef3a47c9fdad16ad"
-  version = "v1.19.1"
-
-[[projects]]
-  digest = "1:4d2e5a73dc1500038e504a8d78b986630e3626dc027bc030ba5c75da257cdb96"
-  name = "gopkg.in/yaml.v2"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "51d6538a90f86fe93ac480b35f37b2be17fef232"
-  version = "v2.2.2"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/RichardKnop/machinery/v1",
-    "github.com/RichardKnop/machinery/v1/config",
-    "github.com/RichardKnop/machinery/v1/log",
-    "github.com/RichardKnop/machinery/v1/tasks",
-    "github.com/Songmu/go-httpdate",
-    "github.com/go-redis/redis",
-    "github.com/patrickmn/go-cache",
-    "github.com/satori/go.uuid",
-    "github.com/spf13/cobra",
-    "github.com/spf13/viper",
-    "github.com/yukimochi/httpsig",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
deleted file mode 100644
index 5c879c7..0000000
--- a/Gopkg.toml
+++ /dev/null
@@ -1,3 +0,0 @@
-[prune]
-  go-tests = true
-  unused-packages = true
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..4079f36
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,15 @@
+module github.com/yukimochi/Activity-Relay
+
+go 1.12
+
+require (
+	github.com/RichardKnop/machinery v1.6.0
+	github.com/Songmu/go-httpdate v1.0.0
+	github.com/go-redis/redis v6.15.2+incompatible
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/patrickmn/go-cache v2.1.0+incompatible
+	github.com/satori/go.uuid v1.2.0
+	github.com/spf13/cobra v0.0.3
+	github.com/spf13/viper v1.3.2
+	github.com/yukimochi/httpsig v0.1.3
+)