diff --git a/scripts/bump_major_version.php b/scripts/bump_major_version.php
new file mode 100644
index 0000000..152ed65
--- /dev/null
+++ b/scripts/bump_major_version.php
@@ -0,0 +1,25 @@
+#!/usr/bin/php
+<?php
+require dirname(__FILE__) . '/../src/Curl/Curl.php';
+
+$current_version = Curl\Curl::VERSION;
+list($major, $minor, $patch) = explode('.', $current_version);
+$new_version = implode('.', array((string)((int)$major += 1), $minor, $patch));
+
+foreach(
+    array(
+        array(
+            dirname(__FILE__) . '/../composer.json',
+            '/"version": "(?:\d+.\d+.\d+)"/',
+            '"version": "' . $new_version . '"',
+        ),
+        array(
+            dirname(__FILE__) . '/../src/Curl/Curl.php',
+            '/const VERSION = \'(?:\d+.\d+.\d+)\';/',
+            'const VERSION = \'' . $new_version . '\';',
+        ),
+    ) as $info) {
+    list($filepath, $find, $replace)  = $info;
+    $data = preg_replace($find, $replace, file_get_contents($filepath));
+    file_put_contents($filepath, $data);
+}
diff --git a/scripts/bump_minor_version.php b/scripts/bump_minor_version.php
new file mode 100644
index 0000000..4a55635
--- /dev/null
+++ b/scripts/bump_minor_version.php
@@ -0,0 +1,25 @@
+#!/usr/bin/php
+<?php
+require dirname(__FILE__) . '/../src/Curl/Curl.php';
+
+$current_version = Curl\Curl::VERSION;
+list($major, $minor, $patch) = explode('.', $current_version);
+$new_version = implode('.', array($major, (string)((int)$minor += 1), $patch));
+
+foreach(
+    array(
+        array(
+            dirname(__FILE__) . '/../composer.json',
+            '/"version": "(?:\d+.\d+.\d+)"/',
+            '"version": "' . $new_version . '"',
+        ),
+        array(
+            dirname(__FILE__) . '/../src/Curl/Curl.php',
+            '/const VERSION = \'(?:\d+.\d+.\d+)\';/',
+            'const VERSION = \'' . $new_version . '\';',
+        ),
+    ) as $info) {
+    list($filepath, $find, $replace)  = $info;
+    $data = preg_replace($find, $replace, file_get_contents($filepath));
+    file_put_contents($filepath, $data);
+}
diff --git a/scripts/bump_patch_version.php b/scripts/bump_patch_version.php
new file mode 100644
index 0000000..3fc24e7
--- /dev/null
+++ b/scripts/bump_patch_version.php
@@ -0,0 +1,25 @@
+#!/usr/bin/php
+<?php
+require dirname(__FILE__) . '/../src/Curl/Curl.php';
+
+$current_version = Curl\Curl::VERSION;
+list($major, $minor, $patch) = explode('.', $current_version);
+$new_version = implode('.', array($major, $minor, (string)((int)$patch += 1)));
+
+foreach(
+    array(
+        array(
+            dirname(__FILE__) . '/../composer.json',
+            '/"version": "(?:\d+.\d+.\d+)"/',
+            '"version": "' . $new_version . '"',
+        ),
+        array(
+            dirname(__FILE__) . '/../src/Curl/Curl.php',
+            '/const VERSION = \'(?:\d+.\d+.\d+)\';/',
+            'const VERSION = \'' . $new_version . '\';',
+        ),
+    ) as $info) {
+    list($filepath, $find, $replace)  = $info;
+    $data = preg_replace($find, $replace, file_get_contents($filepath));
+    file_put_contents($filepath, $data);
+}