diff --git a/doc/04-schema.md b/doc/04-schema.md
index ec885bf85..c4de65150 100644
--- a/doc/04-schema.md
+++ b/doc/04-schema.md
@@ -655,6 +655,8 @@ The following options are supported:
 * **prepend-autoloader:** Defaults to `true`. If false, the composer autoloader
   will not be prepended to existing autoloaders. This is sometimesrequired to fix
   interoperability issues with other autoloaders.
+* **github-domains:** Defaults to `["github.com"]`. A list of domains to use in
+  github mode. This is used for GitHub Enterprise setups.
 * **notify-on-install:** Defaults to `true`. Composer allows repositories to
   define a notification URL, so that they get notified whenever a package from
   that repository is installed. This option allows you to disable that behaviour.
diff --git a/res/composer-schema.json b/res/composer-schema.json
index 1f68c8b43..7b52d7733 100644
--- a/res/composer-schema.json
+++ b/res/composer-schema.json
@@ -179,6 +179,13 @@
                 "prepend-autoloader": {
                     "type": "boolean",
                     "description": "If false, the composer autoloader will not be prepended to existing autoloaders, defaults to true."
+                },
+                "github-domains": {
+                    "type": "array",
+                    "description": "A list of domains to use in github mode. This is used for GitHub Enterprise setups, defaults to [\"github.com\"].",
+                    "items": {
+                        "type": "string"
+                    }
                 }
             }
         },
diff --git a/src/Composer/Config.php b/src/Composer/Config.php
index 6151b4f81..c893091c6 100644
--- a/src/Composer/Config.php
+++ b/src/Composer/Config.php
@@ -36,6 +36,7 @@ class Config
         'cache-files-maxsize' => '300MiB',
         'discard-changes' => false,
         'prepend-autoloader' => true,
+        'github-domains' => array('github.com'),
     );
 
     public static $defaultRepositories = array(
diff --git a/src/Composer/Downloader/GitDownloader.php b/src/Composer/Downloader/GitDownloader.php
index f320cf931..c8e5744bc 100644
--- a/src/Composer/Downloader/GitDownloader.php
+++ b/src/Composer/Downloader/GitDownloader.php
@@ -293,7 +293,7 @@ class GitDownloader extends VcsDownloader
         }
 
         // public github, autoswitch protocols
-        if (preg_match('{^(?:https?|git)(://github.com/.*)}', $url, $match)) {
+        if (preg_match('{^(?:https?|git)(://'.$this->getGitHubDomainsRegex().'/.*)}', $url, $match)) {
             $protocols = $this->config->get('github-protocols');
             if (!is_array($protocols)) {
                 throw new \RuntimeException('Config value "github-protocols" must be an array, got '.gettype($protocols));
@@ -317,7 +317,7 @@ class GitDownloader extends VcsDownloader
         $command = call_user_func($commandCallable, $url);
         if (0 !== $this->process->execute($command, $ignoredOutput, $cwd)) {
             // private github repository without git access, try https with auth
-            if (preg_match('{^git@(github.com):(.+?)\.git$}i', $url, $match)) {
+            if (preg_match('{^git@'.$this->getGitHubDomainsRegex().':(.+?)\.git$}i', $url, $match)) {
                 if (!$this->io->hasAuthentication($match[1])) {
                     $gitHubUtil = new GitHub($this->io, $this->config, $this->process);
                     $message = 'Cloning failed using an ssh key for authentication, enter your GitHub credentials to access private repos';
@@ -368,6 +368,11 @@ class GitDownloader extends VcsDownloader
         }
     }
 
+    protected function getGitHubDomainsRegex()
+    {
+        return '('.implode('|', array_map('preg_quote', $this->config->get('github-domains'))).')';
+    }
+
     protected function throwException($message, $url)
     {
         if (0 !== $this->process->execute('git --version', $ignoredOutput)) {
@@ -385,9 +390,9 @@ class GitDownloader extends VcsDownloader
     protected function setPushUrl(PackageInterface $package, $path)
     {
         // set push url for github projects
-        if (preg_match('{^(?:https?|git)://github.com/([^/]+)/([^/]+?)(?:\.git)?$}', $package->getSourceUrl(), $match)) {
+        if (preg_match('{^(?:https?|git)://'.$this->getGitHubDomainsRegex().'/([^/]+)/([^/]+?)(?:\.git)?$}', $package->getSourceUrl(), $match)) {
             $protocols = $this->config->get('github-protocols');
-            $pushUrl = 'git@github.com:'.$match[1].'/'.$match[2].'.git';
+            $pushUrl = 'git@'.$match[1].':'.$match[2].'/'.$match[3].'.git';
             if ($protocols[0] !== 'git') {
                 $pushUrl = 'https://github.com/'.$match[1].'/'.$match[2].'.git';
             }
diff --git a/tests/Composer/Test/Downloader/GitDownloaderTest.php b/tests/Composer/Test/Downloader/GitDownloaderTest.php
index 1d093574a..7a0816eaf 100644
--- a/tests/Composer/Test/Downloader/GitDownloaderTest.php
+++ b/tests/Composer/Test/Downloader/GitDownloaderTest.php
@@ -24,10 +24,7 @@ class GitDownloaderTest extends \PHPUnit_Framework_TestCase
         $executor = $executor ?: $this->getMock('Composer\Util\ProcessExecutor');
         $filesystem = $filesystem ?: $this->getMock('Composer\Util\Filesystem');
         if (!$config) {
-            $config = $this->getMock('Composer\Config');
-            $config->expects($this->any())
-                ->method('has')
-                ->will($this->returnValue(false));
+            $config = new Config();
         }
 
         return new GitDownloader($io, $config, $executor, $filesystem);