diff --git a/action.yml b/action.yml
index 225e3cc..5a3d233 100644
--- a/action.yml
+++ b/action.yml
@@ -17,6 +17,10 @@ inputs:
     description: 'List of files that are scanned for version references.'
     required: false
     default: ""
+  update-package-json:
+    description: 'Update version field in package.json file.'
+    required: false
+    default: "false"
   # Remember to update docs/reference/github-action.md
 outputs: {}
 runs:
@@ -27,6 +31,7 @@ runs:
     - --forge=github
     - --branch=${{ inputs.branch }}
     - --extra-files="${{ inputs.extra-files }}"
+    - ${{ inputs.update-package-json == 'true' && '--update-package-json' || '' }}
   env:
     GITHUB_TOKEN: "${{ inputs.token }}"
     GITHUB_USER: "oauth2"
diff --git a/cmd/rp/cmd/run.go b/cmd/rp/cmd/run.go
index ec11e24..fa48cc0 100644
--- a/cmd/rp/cmd/run.go
+++ b/cmd/rp/cmd/run.go
@@ -21,21 +21,22 @@ var runCmd = &cobra.Command{
 }
 
 var (
-	flagForge      string
-	flagBranch     string
-	flagOwner      string
-	flagRepo       string
-	flagExtraFiles string
+	flagForge             string
+	flagBranch            string
+	flagOwner             string
+	flagRepo              string
+	flagExtraFiles        string
+	flagUpdatePackageJson bool
 )
 
 func init() {
 	rootCmd.AddCommand(runCmd)
-
 	runCmd.PersistentFlags().StringVar(&flagForge, "forge", "", "")
 	runCmd.PersistentFlags().StringVar(&flagBranch, "branch", "main", "")
 	runCmd.PersistentFlags().StringVar(&flagOwner, "owner", "", "")
 	runCmd.PersistentFlags().StringVar(&flagRepo, "repo", "", "")
 	runCmd.PersistentFlags().StringVar(&flagExtraFiles, "extra-files", "", "")
+	runCmd.PersistentFlags().BoolVar(&flagUpdatePackageJson, "update-package-json", false, "")
 }
 
 func run(cmd *cobra.Command, _ []string) error {
@@ -48,6 +49,7 @@ func run(cmd *cobra.Command, _ []string) error {
 		"branch", flagBranch,
 		"owner", flagOwner,
 		"repo", flagRepo,
+		"update-package-json", flagUpdatePackageJson,
 	)
 
 	var f forge.Forge
@@ -81,6 +83,13 @@ func run(cmd *cobra.Command, _ []string) error {
 
 	extraFiles := parseExtraFiles(flagExtraFiles)
 
+	updaters := []updater.NewUpdater{updater.Generic}
+
+	if flagUpdatePackageJson {
+		logger.DebugContext(ctx, "package.json updater enabled")
+		updaters = append(updaters, updater.PackageJson)
+	}
+
 	releaserPleaser := rp.New(
 		f,
 		logger,
@@ -88,7 +97,7 @@ func run(cmd *cobra.Command, _ []string) error {
 		conventionalcommits.NewParser(logger),
 		versioning.SemVer,
 		extraFiles,
-		[]updater.NewUpdater{updater.Generic},
+		updaters,
 	)
 
 	return releaserPleaser.Run(ctx)
diff --git a/docs/reference/github-action.md b/docs/reference/github-action.md
index eec9789..3a849dc 100644
--- a/docs/reference/github-action.md
+++ b/docs/reference/github-action.md
@@ -14,11 +14,12 @@ The action does not support floating tags (e.g. `v1`) right now ([#31](https://g
 
 The following inputs are supported by the `apricote/releaser-pleaser` GitHub Action.
 
-| Input         | Description                                            |         Default |                                                              Example |
-| ------------- | :----------------------------------------------------- | --------------: | -------------------------------------------------------------------: |
-| `branch`      | This branch is used as the target for releases.        |          `main` |                                                             `master` |
-| `token`       | GitHub token for creating and updating release PRs     | `$GITHUB_TOKEN` |                                `${{secrets.RELEASER_PLEASER_TOKEN}}` |
-| `extra-files` | List of files that are scanned for version references. |            `""` | <pre><code>version/version.go<br>deploy/deployment.yaml</code></pre> |
+| Input                 | Description                                             |         Default |                                                              Example |
+| --------------------- | :------------------------------------------------------ | --------------: | -------------------------------------------------------------------: |
+| `branch`              | This branch is used as the target for releases.         |          `main` |                                                             `master` |
+| `token`               | GitHub token for creating and updating release PRs      | `$GITHUB_TOKEN` |                                `${{secrets.RELEASER_PLEASER_TOKEN}}` |
+| `extra-files`         | List of files that are scanned for version references.  |            `""` | <pre><code>version/version.go<br>deploy/deployment.yaml</code></pre> |
+| `update-package-json` | Update version field in package.json file.              |         `false` |                                                               `true` |
 
 ## Outputs
 
diff --git a/docs/reference/gitlab-cicd-component.md b/docs/reference/gitlab-cicd-component.md
index b22d5b2..01a6fc2 100644
--- a/docs/reference/gitlab-cicd-component.md
+++ b/docs/reference/gitlab-cicd-component.md
@@ -23,5 +23,6 @@ The following inputs are supported by the component.
 | `branch`               | This branch is used as the target for releases.           |  `main` |                                                             `master` |
 | `token` (**required**) | GitLab access token for creating and updating release PRs |         |                                            `$RELEASER_PLEASER_TOKEN` |
 | `extra-files`          | List of files that are scanned for version references.    |    `""` | <pre><code>version/version.go<br>deploy/deployment.yaml</code></pre> |
+| `update-package-json`  | Update version field in package.json file.                | `false` |                                                               `true` |
 | `stage`                | Stage the job runs in. Must exists.                       | `build` |                                                               `test` |
 | `needs`                | Other jobs the releaser-pleaser job depends on.           |    `[]` |              <pre><code>- validate-foo<br>- prepare-bar</code></pre> |
diff --git a/internal/git/git.go b/internal/git/git.go
index d1db11b..b9c750e 100644
--- a/internal/git/git.go
+++ b/internal/git/git.go
@@ -6,6 +6,7 @@ import (
 	"io"
 	"log/slog"
 	"os"
+	"path/filepath"
 	"time"
 
 	"github.com/go-git/go-git/v5"
@@ -144,7 +145,7 @@ func (r *Repository) UpdateFile(_ context.Context, path string, create bool, upd
 	updatedContent := string(content)
 
 	for _, update := range updaters {
-		updatedContent, err = update(updatedContent)
+		updatedContent, err = update(updatedContent, filepath.Base(path))
 		if err != nil {
 			return fmt.Errorf("failed to run updater on file %s", path)
 		}
diff --git a/internal/updater/changelog.go b/internal/updater/changelog.go
index 8bdb9f6..8d6d68c 100644
--- a/internal/updater/changelog.go
+++ b/internal/updater/changelog.go
@@ -15,7 +15,7 @@ var (
 )
 
 func Changelog(info ReleaseInfo) Updater {
-	return func(content string) (string, error) {
+	return func(content string, filename string) (string, error) {
 		headerIndex := ChangelogUpdaterHeaderRegex.FindStringIndex(content)
 		if headerIndex == nil && len(content) != 0 {
 			return "", fmt.Errorf("unexpected format of CHANGELOG.md, header does not match")
diff --git a/internal/updater/changelog_test.go b/internal/updater/changelog_test.go
index 917cd14..35878b9 100644
--- a/internal/updater/changelog_test.go
+++ b/internal/updater/changelog_test.go
@@ -9,11 +9,12 @@ import (
 func TestChangelogUpdater_UpdateContent(t *testing.T) {
 	tests := []updaterTestCase{
 		{
-			name:    "empty file",
-			content: "",
-			info:    ReleaseInfo{ChangelogEntry: "## v1.0.0\n"},
-			want:    "# Changelog\n\n## v1.0.0\n",
-			wantErr: assert.NoError,
+			name:     "empty file",
+			content:  "",
+			filename: "CHANGELOG.md",
+			info:     ReleaseInfo{ChangelogEntry: "## v1.0.0\n"},
+			want:     "# Changelog\n\n## v1.0.0\n",
+			wantErr:  assert.NoError,
 		},
 		{
 			name: "well-formatted changelog",
@@ -27,7 +28,8 @@ func TestChangelogUpdater_UpdateContent(t *testing.T) {
 
 ### Bazuuum
 `,
-			info: ReleaseInfo{ChangelogEntry: "## v1.0.0\n\n- Version 1, juhu.\n"},
+			filename: "CHANGELOG.md",
+			info:     ReleaseInfo{ChangelogEntry: "## v1.0.0\n\n- Version 1, juhu.\n"},
 			want: `# Changelog
 
 ## v1.0.0
@@ -45,11 +47,12 @@ func TestChangelogUpdater_UpdateContent(t *testing.T) {
 			wantErr: assert.NoError,
 		},
 		{
-			name:    "error on invalid header",
-			content: "What even is this file?",
-			info:    ReleaseInfo{ChangelogEntry: "## v1.0.0\n\n- Version 1, juhu.\n"},
-			want:    "",
-			wantErr: assert.Error,
+			name:     "error on invalid header",
+			content:  "What even is this file?",
+			filename: "CHANGELOG.md",
+			info:     ReleaseInfo{ChangelogEntry: "## v1.0.0\n\n- Version 1, juhu.\n"},
+			want:     "",
+			wantErr:  assert.Error,
 		},
 	}
 	for _, tt := range tests {
diff --git a/internal/updater/generic.go b/internal/updater/generic.go
index b8d73b0..1883c1a 100644
--- a/internal/updater/generic.go
+++ b/internal/updater/generic.go
@@ -8,7 +8,7 @@ import (
 var GenericUpdaterSemVerRegex = regexp.MustCompile(`\d+\.\d+\.\d+(-[\w.]+)?(.*x-releaser-pleaser-version)`)
 
 func Generic(info ReleaseInfo) Updater {
-	return func(content string) (string, error) {
+	return func(content string, filename string) (string, error) {
 		// We strip the "v" prefix to avoid adding/removing it from the users input.
 		version := strings.TrimPrefix(info.Version, "v")
 
diff --git a/internal/updater/generic_test.go b/internal/updater/generic_test.go
index e0a8d1d..4cc8952 100644
--- a/internal/updater/generic_test.go
+++ b/internal/updater/generic_test.go
@@ -9,8 +9,9 @@ import (
 func TestGenericUpdater_UpdateContent(t *testing.T) {
 	tests := []updaterTestCase{
 		{
-			name:    "single line",
-			content: "v1.0.0 // x-releaser-pleaser-version",
+			name:     "single line",
+			content:  "v1.0.0 // x-releaser-pleaser-version",
+			filename: "version.txt",
 			info: ReleaseInfo{
 				Version: "v1.2.0",
 			},
@@ -18,8 +19,9 @@ func TestGenericUpdater_UpdateContent(t *testing.T) {
 			wantErr: assert.NoError,
 		},
 		{
-			name:    "multiline line",
-			content: "Foooo\n\v1.2.0\nv1.0.0 // x-releaser-pleaser-version\n",
+			name:     "multiline line",
+			content:  "Foooo\n\v1.2.0\nv1.0.0 // x-releaser-pleaser-version\n",
+			filename: "version.txt",
 			info: ReleaseInfo{
 				Version: "v1.2.0",
 			},
@@ -27,8 +29,9 @@ func TestGenericUpdater_UpdateContent(t *testing.T) {
 			wantErr: assert.NoError,
 		},
 		{
-			name:    "invalid existing version",
-			content: "1.0 // x-releaser-pleaser-version",
+			name:     "invalid existing version",
+			content:  "1.0 // x-releaser-pleaser-version",
+			filename: "version.txt",
 			info: ReleaseInfo{
 				Version: "v1.2.0",
 			},
@@ -36,8 +39,9 @@ func TestGenericUpdater_UpdateContent(t *testing.T) {
 			wantErr: assert.NoError,
 		},
 		{
-			name:    "complicated line",
-			content: "version: v1.2.0-alpha.1 => Awesome, isnt it? x-releaser-pleaser-version foobar",
+			name:     "complicated line",
+			content:  "version: v1.2.0-alpha.1 => Awesome, isnt it? x-releaser-pleaser-version foobar",
+			filename: "version.txt",
 			info: ReleaseInfo{
 				Version: "v1.2.0",
 			},
diff --git a/internal/updater/packagejson.go b/internal/updater/packagejson.go
new file mode 100644
index 0000000..58f2cc3
--- /dev/null
+++ b/internal/updater/packagejson.go
@@ -0,0 +1,30 @@
+package updater
+
+import (
+	"regexp"
+	"strings"
+)
+
+// PackageJson creates an updater that modifies the version field in package.json files
+func PackageJson(info ReleaseInfo) Updater {
+	return func(content string, filename string) (string, error) {
+		if filename != "package.json" {
+			return content, nil // No update needed for non-package.json files
+		}
+		// We strip the "v" prefix to match npm versioning convention
+		version := strings.TrimPrefix(info.Version, "v")
+
+		// Regex to match "version": "..." with flexible whitespace and quote styles
+		versionRegex := regexp.MustCompile(`("version"\s*:\s*)"[^"]*"`)
+
+		// Check if the file contains a version field
+		if !versionRegex.MatchString(content) {
+			return content, nil
+		}
+
+		// Replace the version value while preserving the original formatting
+		updatedContent := versionRegex.ReplaceAllString(content, `${1}"`+version+`"`)
+
+		return updatedContent, nil
+	}
+}
diff --git a/internal/updater/packagejson_test.go b/internal/updater/packagejson_test.go
new file mode 100644
index 0000000..4fd196e
--- /dev/null
+++ b/internal/updater/packagejson_test.go
@@ -0,0 +1,70 @@
+package updater
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPackageJsonUpdater(t *testing.T) {
+	tests := []updaterTestCase{
+		{
+			name:     "simple package.json",
+			content:  `{"name":"test","version":"1.0.0"}`,
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.5",
+			},
+			want:    `{"name":"test","version":"2.0.5"}`,
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "simple package.json, wrong name",
+			content:  `{"name":"test","version":"1.0.0"}`,
+			filename: "nopackage.json",
+			info: ReleaseInfo{
+				Version: "v2.0.5",
+			},
+			want:    `{"name":"test","version":"1.0.0"}`,
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "complex package.json",
+			content:  "{\n  \"name\": \"test\",\n  \"version\": \"1.0.0\",\n  \"dependencies\": {\n    \"foo\": \"^1.0.0\"\n  }\n}",
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.0",
+			},
+			want:    "{\n  \"name\": \"test\",\n  \"version\": \"2.0.0\",\n  \"dependencies\": {\n    \"foo\": \"^1.0.0\"\n  }\n}",
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "invalid json",
+			content:  `not json`,
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.0",
+			},
+			want:    `not json`,
+			wantErr: assert.NoError,
+		},
+		{
+			name:     "json without version",
+			content:  `{"name":"test"}`,
+			filename: "package.json",
+			info: ReleaseInfo{
+				Version: "v2.0.0",
+			},
+			want:    `{"name":"test"}`,
+			wantErr: assert.NoError,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			fmt.Println("Running updater test for PackageJson")
+			runUpdaterTest(t, PackageJson, tt)
+		})
+	}
+}
diff --git a/internal/updater/updater.go b/internal/updater/updater.go
index fb773b4..f5fd677 100644
--- a/internal/updater/updater.go
+++ b/internal/updater/updater.go
@@ -5,7 +5,7 @@ type ReleaseInfo struct {
 	ChangelogEntry string
 }
 
-type Updater func(string) (string, error)
+type Updater func(content string, filename string) (string, error)
 
 type NewUpdater func(ReleaseInfo) Updater
 
diff --git a/internal/updater/updater_test.go b/internal/updater/updater_test.go
index 0c0c40e..17162ef 100644
--- a/internal/updater/updater_test.go
+++ b/internal/updater/updater_test.go
@@ -8,19 +8,20 @@ import (
 )
 
 type updaterTestCase struct {
-	name    string
-	content string
-	info    ReleaseInfo
-	want    string
-	wantErr assert.ErrorAssertionFunc
+	name     string
+	content  string
+	filename string
+	info     ReleaseInfo
+	want     string
+	wantErr  assert.ErrorAssertionFunc
 }
 
 func runUpdaterTest(t *testing.T, constructor NewUpdater, tt updaterTestCase) {
 	t.Helper()
 
-	got, err := constructor(tt.info)(tt.content)
-	if !tt.wantErr(t, err, fmt.Sprintf("Updater(%v, %v)", tt.content, tt.info)) {
+	got, err := constructor(tt.info)(tt.content, tt.filename)
+	if !tt.wantErr(t, err, fmt.Sprintf("Updater(%v, %v, %v)", tt.content, tt.filename, tt.info)) {
 		return
 	}
-	assert.Equalf(t, tt.want, got, "Updater(%v, %v)", tt.content, tt.info)
+	assert.Equalf(t, tt.want, got, "Updater(%v, %v, %v)", tt.content, tt.filename, tt.info)
 }
diff --git a/templates/run.yml b/templates/run.yml
index c18a330..66037b1 100644
--- a/templates/run.yml
+++ b/templates/run.yml
@@ -12,6 +12,10 @@ spec:
       description: 'List of files that are scanned for version references.'
       default: ""
 
+    update-package-json:
+      description: 'Update version field in package.json file.'
+      default: "false"
+
     stage:
       default: build
       description: 'Defines the build stage'
@@ -49,4 +53,5 @@ releaser-pleaser:
       rp run \
         --forge=gitlab \
         --branch=$[[ inputs.branch ]] \
-        --extra-files="$[[ inputs.extra-files ]]"
+        --extra-files="$[[ inputs.extra-files ]]" \
+        $([[ inputs.update-package-json == "true" ]] && echo "--update-package-json" || echo "")