diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000000000000000000000000000000000000..8735825d6dec56be63ab8c04165c14a9faff542c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,61 @@
+name: CI
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        run: |
+          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s
+          ./bin/golangci-lint run -v
+  build:
+    runs-on: ${{ matrix.os }}
+    needs: lint
+    strategy:
+      fail-fast: true
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v1
+        with:
+          go-version: 1.14
+
+      - name: Build
+        run: go build ./cmd/files-updater-npm/
+
+      - name: Test
+        run: go test -v ./...
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v1
+        with:
+          go-version: 1.14
+      - run: echo "::add-path::~/go/bin"
+      - name: Get release dependencies
+        run: |
+          go get github.com/mitchellh/gox
+          go get github.com/tcnksm/ghr
+      - uses: go-semantic-release/action@v1
+        id: semrel
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          ghr: true
+      - run: |
+          gox -parallel 4 -osarch="linux/amd64 darwin/amd64 linux/arm windows/amd64" -ldflags="-extldflags '-static' -s -w" -output="bin/{{.Dir}}_v${{steps.semrel.outputs.version}}_{{.OS}}_{{.Arch}}" ./cmd/files-updater-npm/
+        if: steps.semrel.outputs.version != ''
+      - run: ghr $(cat .ghr) bin/
+        if: steps.semrel.outputs.version != ''
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..743a5b0dddbef42aaf2f1325ac7cf031aac59b23
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.idea/
+test/.npmrc
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000000000000000000000000000000000000..de98990244997f2ac5e713929659570d3bcb6bc2
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+ advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+ address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+ professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at github+coc@christophwitzko.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..cd9228422a6f5e1127ee8ceeeac7a313e8825b48
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2020 Christoph Witzko
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..f6ddd314bf8d4562fc2d5f98143c25551a73e71b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,12 @@
+# :open_file_folder: files-updater-npm
+[![CI](https://github.com/go-semantic-release/files-updater-npm/workflows/CI/badge.svg?branch=master)](https://github.com/go-semantic-release/files-updater-npm/actions?query=workflow%3ACI+branch%3Amaster)
+[![Go Report Card](https://goreportcard.com/badge/github.com/go-semantic-release/files-updater-npm)](https://goreportcard.com/report/github.com/go-semantic-release/files-updater-npm)
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/go-semantic-release/files-updater-npm)](https://pkg.go.dev/github.com/go-semantic-release/files-updater-npm)
+
+The npm files updater for [go-semantic-release](https://github.com/go-semantic-release/semantic-release).
+
+## Licence
+
+The [MIT License (MIT)](http://opensource.org/licenses/MIT)
+
+Copyright © 2020 [Christoph Witzko](https://twitter.com/christophwitzko)
diff --git a/cmd/files-updater-npm/main.go b/cmd/files-updater-npm/main.go
new file mode 100644
index 0000000000000000000000000000000000000000..ea43241faace991690195bc217aaed25607b482c
--- /dev/null
+++ b/cmd/files-updater-npm/main.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	npmUpdater "github.com/go-semantic-release/files-updater-npm/pkg/updater"
+	"github.com/go-semantic-release/semantic-release/v2/pkg/plugin"
+	"github.com/go-semantic-release/semantic-release/v2/pkg/updater"
+)
+
+func main() {
+	plugin.Serve(&plugin.ServeOpts{
+		FilesUpdater: func() updater.FilesUpdater {
+			return &npmUpdater.Updater{}
+		},
+	})
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000000000000000000000000000000000000..f9e22d7b19f21ef085a49150c20fa48ec731d500
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,8 @@
+module github.com/go-semantic-release/files-updater-npm
+
+go 1.14
+
+require (
+	github.com/go-semantic-release/semantic-release/v2 v2.1.0
+	github.com/stretchr/testify v1.6.1
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000000000000000000000000000000000000..118f99467af98f25a0312183726769bdbc390e44
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,150 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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diff --git a/pkg/updater/npm.go b/pkg/updater/npm.go
new file mode 100644
index 0000000000000000000000000000000000000000..202d8388bb88f2032685f370ba880521b2761200
--- /dev/null
+++ b/pkg/updater/npm.go
@@ -0,0 +1,67 @@
+package updater
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"path"
+)
+
+const npmrc = "//registry.npmjs.org/:_authToken=${NPM_TOKEN}\n"
+
+type Updater struct {
+}
+
+func (u *Updater) ForFiles() string {
+	return "package\\.json"
+}
+
+func updateJsonFile(fName, newVersion string) error {
+	file, err := os.OpenFile(fName, os.O_RDWR, 0)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+	var data map[string]json.RawMessage
+	if err := json.NewDecoder(file).Decode(&data); err != nil {
+		return err
+	}
+	data["version"] = json.RawMessage("\"" + newVersion + "\"")
+	if _, err := file.Seek(0, 0); err != nil {
+		return err
+	}
+	if err := file.Truncate(0); err != nil {
+		return err
+	}
+	enc := json.NewEncoder(file)
+	enc.SetIndent("", "  ")
+	if err := enc.Encode(data); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (u *Updater) Apply(file, newVersion string) error {
+	if err := updateJsonFile(file, newVersion); err != nil {
+		return err
+	}
+
+	packageLockPath := path.Join(path.Dir(file), "package-lock.json")
+	if _, err := os.Stat(packageLockPath); err == nil {
+		if err := updateJsonFile(packageLockPath, newVersion); err != nil {
+			return err
+		}
+	}
+
+	if os.Getenv("NPM_CONFIG_USERCONFIG") != "" {
+		return nil
+	}
+
+	var err error
+	npmrcPath := path.Join(path.Dir(file), ".npmrc")
+	if _, err = os.Stat(npmrcPath); os.IsNotExist(err) {
+		return ioutil.WriteFile(npmrcPath, []byte(npmrc), 0644)
+	}
+
+	return err
+}
diff --git a/pkg/updater/npm_test.go b/pkg/updater/npm_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..7b56d8ae1d3234c31c51dd4e780502776dc0d5f6
--- /dev/null
+++ b/pkg/updater/npm_test.go
@@ -0,0 +1,69 @@
+package updater
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestNpmUpdater(t *testing.T) {
+	require := require.New(t)
+
+	updater := &Updater{}
+
+	nVer := "1.2.3"
+	nVerJSON := json.RawMessage("\"" + nVer + "\"")
+	npmrcPath := "../../test/.npmrc"
+	pkgJsonPath := "../../test/package.json"
+	os.Remove(npmrcPath)
+
+	err := updater.Apply(pkgJsonPath, nVer)
+	require.NoError(err)
+	npmfile, err := ioutil.ReadFile(npmrcPath)
+	require.NoError(err)
+	require.Equal([]byte(npmrc), npmfile, "invalid .npmrc")
+	f, err := os.OpenFile(pkgJsonPath, os.O_RDONLY, 0)
+	require.NoError(err)
+	defer f.Close()
+	var data map[string]json.RawMessage
+	err = json.NewDecoder(f).Decode(&data)
+	require.NoError(err)
+
+	require.Equal(nVerJSON, data["version"], "invalid version")
+
+	plF, err := os.OpenFile("../../test/package-lock.json", os.O_RDONLY, 0)
+	require.NoError(err, "fixture package-lock.json missing")
+	var plData map[string]json.RawMessage
+	err = json.NewDecoder(plF).Decode(&plData)
+	require.NoError(err)
+	require.Equal(nVerJSON, plData["version"], "invalid version")
+}
+
+func TestNpmrc(t *testing.T) {
+	require := require.New(t)
+
+	nVer := "1.2.3"
+	npmrcPath := "../../test/.npmrc"
+	pkgJsonPath := "../../test/package.json"
+
+	err := ioutil.WriteFile(npmrcPath, []byte("TEST"), 0644)
+	require.NoError(err)
+
+	updater := &Updater{}
+	err = updater.Apply(pkgJsonPath, nVer)
+	require.NoError(err)
+	npmfile, err := ioutil.ReadFile(npmrcPath)
+	require.NoError(err)
+	require.Equal([]byte("TEST"), npmfile, "invalid .npmrc")
+	f, err := os.OpenFile(pkgJsonPath, os.O_RDONLY, 0)
+	require.NoError(err)
+	defer f.Close()
+	require.NoError(err)
+	var data map[string]json.RawMessage
+	err = json.NewDecoder(f).Decode(&data)
+	require.NoError(err)
+	require.Equal(json.RawMessage("\""+nVer+"\""), data["version"], "invalid version")
+}
diff --git a/test/package-lock.json b/test/package-lock.json
new file mode 100644
index 0000000000000000000000000000000000000000..48543383a7f528775481bd4b1c7c618920db8ad6
--- /dev/null
+++ b/test/package-lock.json
@@ -0,0 +1,6 @@
+{
+  "lockfileVersion": 1,
+  "name": "test-package",
+  "requires": true,
+  "version": "1.0.0"
+}
diff --git a/test/package.json b/test/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..d25122b80077f87f8de520beab8c50e64aac31c2
--- /dev/null
+++ b/test/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "test-package",
+  "version": "1.0.0"
+}