diff --git a/composer.json b/composer.json
index 62a9217..2afb468 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,8 @@
         "symfony/debug": "^3.1",
         "netresearch/jsonmapper": "^1.0",
         "webmozart/path-util": "^2.3",
-        "webmozart/glob": "^4.1"
+        "webmozart/glob": "^4.1",
+        "sabre/uri": "^2.0"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,
diff --git a/src/Client/Workspace.php b/src/Client/Workspace.php
index 8e277e5..901e386 100644
--- a/src/Client/Workspace.php
+++ b/src/Client/Workspace.php
@@ -30,16 +30,16 @@ class Workspace
     }
 
     /**
-     * Returns a list of all files in the workspace that match any of the given glob patterns
+     * Returns a list of all files in a directory
      *
-     * @param string[] $patterns Glob patterns
-     * @return Promise <TextDocumentIdentifier[]> Array of documents that match the glob patterns
+     * @param string $base The base directory (defaults to the workspace)
+     * @return Promise <TextDocumentIdentifier[]> Array of documents
      */
-    public function xglob(array $patterns): Promise
+    public function xfiles(string $base = null): Promise
     {
         return $this->handler->request(
-            'workspace/xglob',
-            ['patterns' => $patterns]
+            'workspace/xfiles',
+            ['base' => $base]
         )->then(function (array $textDocuments) {
             return $this->mapper->mapArray($textDocuments, [], TextDocumentIdentifier::class);
         });
diff --git a/src/LanguageServer.php b/src/LanguageServer.php
index a6789b9..959aa33 100644
--- a/src/LanguageServer.php
+++ b/src/LanguageServer.php
@@ -20,7 +20,9 @@ use Exception;
 use RuntimeException;
 use Throwable;
 use Webmozart\Glob\Iterator\GlobIterator;
+use Webmozart\Glob\Glob;
 use Webmozart\PathUtil\Path;
+use Sabre\Uri;
 
 class LanguageServer extends AdvancedJsonRpc\Dispatcher
 {
@@ -215,19 +217,24 @@ class LanguageServer extends AdvancedJsonRpc\Dispatcher
     private function findPhpFiles(): Promise
     {
         return coroutine(function () {
+            $textDocuments = [];
+            $pattern = Path::makeAbsolute('**/*.php', $this->rootPath);
             if ($this->clientCapabilities->xfilesProvider) {
                 // Use xfiles request
-                return yield $this->client->workspace->xfiles($patterns);
+                foreach (yield $this->client->workspace->xfiles() as $textDocument) {
+                    $path = Uri\parse($textDocument->uri)['path'];
+                    if (Glob::match($path, $pattern)) {
+                        $textDocuments[] = $textDocument;
+                    }
+                }
             } else {
                 // Use the file system
-                $textDocuments = [];
-                $pattern = Path::makeAbsolute('**/*.php', $this->rootPath);
                 foreach (new GlobIterator($pattern) as $path) {
                     $textDocuments[] = new TextDocumentIdentifier(pathToUri($path));
                     yield timeout();
                 }
-                return $textDocuments;
             }
+            return $textDocuments;
         });
     }
 }
diff --git a/tests/LanguageServerTest.php b/tests/LanguageServerTest.php
index fcab0c3..1690a5e 100644
--- a/tests/LanguageServerTest.php
+++ b/tests/LanguageServerTest.php
@@ -5,7 +5,8 @@ namespace LanguageServer\Tests;
 
 use PHPUnit\Framework\TestCase;
 use LanguageServer\LanguageServer;
-use LanguageServer\Protocol\{Message, ClientCapabilities, TextDocumentSyncKind, MessageType, Content};
+use LanguageServer\Protocol\{
+    Message, ClientCapabilities, TextDocumentSyncKind, MessageType, TextDocumentItem, TextDocumentIdentifier};
 use AdvancedJsonRpc;
 use Webmozart\Glob\Glob;
 use Webmozart\PathUtil\Path;
@@ -71,31 +72,32 @@ class LanguageServerTest extends TestCase
         $promise->wait();
     }
 
-    public function testIndexingWithGlobAndContentRequests()
+    public function testIndexingWithFilesAndContentRequests()
     {
         $promise = new Promise;
-        $globCalled = false;
+        $filesCalled = false;
         $contentCalled = false;
         $rootPath = realpath(__DIR__ . '/../fixtures');
         $input = new MockProtocolStream;
         $output = new MockProtocolStream;
-        $output->on('message', function (Message $msg) use ($promise, $input, $rootPath, &$globCalled, &$contentCalled) {
+        $output->on('message', function (Message $msg) use ($promise, $input, $rootPath, &$filesCalled, &$contentCalled) {
             if ($msg->body->method === 'textDocument/xcontent') {
                 // Document content requested
                 $contentCalled = true;
-                $input->write(new Message(new AdvancedJsonRpc\SuccessResponse(
-                    $msg->body->id,
-                    new Content(file_get_contents($msg->body->params->textDocument->uri))
-                )));
-            } else if ($msg->body->method === 'workspace/xglob') {
+                $textDocumentItem = new TextDocumentItem;
+                $textDocumentItem->uri = $msg->body->params->textDocument->uri;
+                $textDocumentItem->version = 1;
+                $textDocumentItem->languageId = 'php';
+                $textDocumentItem->text = file_get_contents($msg->body->params->textDocument->uri);
+                $input->write(new Message(new AdvancedJsonRpc\SuccessResponse($msg->body->id, $textDocumentItem)));
+            } else if ($msg->body->method === 'workspace/xfiles') {
                 // Glob requested
-                $globCalled = true;
-                $files = array_map(
-                    '\\LanguageServer\\pathToUri',
-                    array_merge(...array_map(function (string $pattern) use ($rootPath) {
-                        return Glob::glob(Path::makeAbsolute($pattern, $rootPath));
-                    }, $msg->body->params->patterns))
-                );
+                $filesCalled = true;
+                $pattern = Path::makeAbsolute('**/*.php', $msg->body->params->base ?? $rootPath);
+                $files = [];
+                foreach (Glob::glob($pattern) as $path) {
+                    $files[] = new TextDocumentIdentifier(pathToUri($path));
+                }
                 $input->write(new Message(new AdvancedJsonRpc\SuccessResponse($msg->body->id, $files)));
             } else if ($msg->body->method === 'window/logMessage') {
                 // Message logged
@@ -112,11 +114,11 @@ class LanguageServerTest extends TestCase
         });
         $server = new LanguageServer($input, $output);
         $capabilities = new ClientCapabilities;
-        $capabilities->xglobProvider = true;
+        $capabilities->xfilesProvider = true;
         $capabilities->xcontentProvider = true;
         $server->initialize(getmypid(), $capabilities, $rootPath);
         $promise->wait();
-        $this->assertTrue($globCalled);
+        $this->assertTrue($filesCalled);
         $this->assertTrue($contentCalled);
     }
 }