diff --git a/src/Bump/ComposerJson.php b/src/Bump/ComposerJson.php
new file mode 100644
index 0000000..6ede7c3
--- /dev/null
+++ b/src/Bump/ComposerJson.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace ConventionalChangelog\Bump;
+
+use ConventionalChangelog\Type\Bump;
+
+class ComposerJson extends Bump
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected $fileName = 'composer.json';
+    /**
+     * {@inheritdoc}
+     */
+    protected $fileType = 'json';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getVersion(): ?string
+    {
+        return $this->content->version;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setVersion(string $version): self
+    {
+        $this->content->version = $version;
+
+        return $this;
+    }
+}
diff --git a/src/Bump/PackageJson.php b/src/Bump/PackageJson.php
new file mode 100644
index 0000000..7dec1da
--- /dev/null
+++ b/src/Bump/PackageJson.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace ConventionalChangelog\Bump;
+
+use ConventionalChangelog\Type\Bump;
+
+class PackageJson extends Bump
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected $fileName = 'package.json';
+    /**
+     * {@inheritdoc}
+     */
+    protected $fileType = 'json';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getVersion(): ?string
+    {
+        return $this->content->version;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setVersion(string $version): self
+    {
+        $this->content->version = $version;
+
+        return $this;
+    }
+}
diff --git a/src/Changelog.php b/src/Changelog.php
index 4b68ef9..44ac41c 100644
--- a/src/Changelog.php
+++ b/src/Changelog.php
@@ -2,11 +2,15 @@
 
 namespace ConventionalChangelog;
 
+use ConventionalChangelog\Bump\ComposerJson;
+use ConventionalChangelog\Bump\PackageJson;
 use ConventionalChangelog\Git\ConventionalCommit;
 use ConventionalChangelog\Git\Repository;
 use ConventionalChangelog\Helper\Formatter;
 use ConventionalChangelog\Helper\SemanticVersion;
+use ConventionalChangelog\Type\Bump;
 use DateTime;
+use Exception;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
@@ -72,6 +76,13 @@ public function generate(InputInterface $input, SymfonyStyle $output): int
 
         $autoCommit = $autoCommit || $autoCommitAll;
         $autoBump = false;
+        /**
+         * @var Bump[]
+         */
+        $packageBumps = [
+            ComposerJson::class,
+            PackageJson::class,
+        ];
 
         if (empty($root) || !is_dir($root)) {
             $root = $this->config->getRoot();
@@ -361,6 +372,22 @@ public function generate(InputInterface $input, SymfonyStyle $output): int
             // Add all changes list to new changelog
             $changelogNew .= $this->getMarkdownChanges($changes);
         }
+        $filesToCommit = [$file];
+        foreach ($packageBumps as $packageBump) {
+            try {
+                /**
+                 * @var Bump
+                 */
+                $bumper = new $packageBump($root);
+                if ($bumper->exists()) {
+                    $bumper->setVersion($newVersion);
+                    $bumper->save();
+                    $filesToCommit[] = $bumper->getFilePath();
+                }
+            } catch (Exception $e) {
+                $output->error('An error occurred bumping package version: ' . $e->getMessage());
+            }
+        }
 
         // Print summary
         if (!empty($summary)) {
@@ -385,7 +412,7 @@ public function generate(InputInterface $input, SymfonyStyle $output): int
                 Repository::addAll();
             }
             $message = $this->getReleaseCommitMessage($newVersion);
-            $result = Repository::commit($message, [$file], $amend, $hooks);
+            $result = Repository::commit($message, $filesToCommit, $amend, $hooks);
             if ($result !== false) {
                 $output->success('Release committed!');
                 // Create tag
diff --git a/src/Type/Bump.php b/src/Type/Bump.php
new file mode 100644
index 0000000..405b3ae
--- /dev/null
+++ b/src/Type/Bump.php
@@ -0,0 +1,157 @@
+<?php
+
+namespace ConventionalChangelog\Type;
+
+use Exception;
+
+abstract class Bump
+{
+    /**
+     * Package filename.
+     *
+     * @var string
+     */
+    protected $fileName;
+    /**
+     * Package file type.
+     *
+     * @var string
+     */
+    protected $fileType;
+    /**
+     * Base path.
+     *
+     * @var string
+     */
+    protected $path;
+    /**
+     * Content.
+     *
+     * @var mixed
+     */
+    protected $content;
+    /**
+     * Original content for backup usage.
+     *
+     * @var mixed
+     */
+    protected $originContent;
+
+    /**
+     * Bump constructor.
+     */
+    public function __construct(string $path)
+    {
+        $this->path = $path;
+        if ($this->exists()) {
+            $raw = file_get_contents($this->getFilePath());
+            switch ($this->fileType) {
+                case 'json':
+                    $this->originContent = json_decode($raw);
+                    if ($this->originContent === null && json_last_error() !== JSON_ERROR_NONE) {
+                        throw new Exception(json_last_error_msg(), json_last_error());
+                    }
+                    $this->content = clone $this->originContent;
+                    break;
+                default:
+                    $this->originContent = $raw;
+                    $this->content = $raw;
+            }
+        }
+    }
+
+    /**
+     * Get version.
+     */
+    public function getVersion(): ?string
+    {
+        return null;
+    }
+
+    /**
+     * Set version.
+     *
+     * @return $this
+     */
+    public function setVersion(string $version)
+    {
+        return $this;
+    }
+
+    /**
+     * Get file path.
+     */
+    public function getFilePath(): string
+    {
+        if (empty($this->path)) {
+            $this->path = getcwd();
+        }
+        $path = $this->path . DIRECTORY_SEPARATOR . $this->fileName;
+
+        return preg_replace('/' . preg_quote(DIRECTORY_SEPARATOR, '/') . '+/', DIRECTORY_SEPARATOR, $path);
+    }
+
+    /**
+     * Get filename.
+     */
+    public function getFileName(): string
+    {
+        return $this->fileName;
+    }
+
+    /**
+     * Package file exists.
+     */
+    public function exists(): bool
+    {
+        return is_file($this->getFilePath());
+    }
+
+    /**
+     * Save content.
+     *
+     * @return $this
+     */
+    public function save()
+    {
+        if ($this->exists()) {
+            switch ($this->fileType) {
+                case 'json':
+                    $content = json_encode($this->content, JSON_PRETTY_PRINT);
+                    if ($content === null && json_last_error() !== JSON_ERROR_NONE) {
+                        throw new Exception(json_last_error_msg(), json_last_error());
+                    }
+                    break;
+                default:
+                    $content = $this->content;
+            }
+            file_put_contents($this->getFilePath(), $content);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set content.
+     *
+     * @param mixed $content
+     *
+     * @return $this
+     */
+    protected function setContent($content)
+    {
+        $this->content = $content;
+
+        return $this;
+    }
+
+    /**
+     * Get content and back backup.
+     *
+     * @return mixed
+     */
+    protected function getContent()
+    {
+        return $this->content;
+    }
+}