diff --git a/src/StaticPHP/Command/BuildLibsCommand.php b/src/StaticPHP/Command/BuildLibsCommand.php
index a637fe7c..63a3ad0f 100644
--- a/src/StaticPHP/Command/BuildLibsCommand.php
+++ b/src/StaticPHP/Command/BuildLibsCommand.php
@@ -6,8 +6,10 @@ namespace StaticPHP\Command;
 
 use StaticPHP\Artifact\DownloaderOptions;
 use StaticPHP\Package\PackageInstaller;
+use StaticPHP\Registry\PackageLoader;
 use StaticPHP\Util\V2CompatLayer;
 use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Completion\CompletionInput;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputOption;
 
@@ -16,7 +18,19 @@ class BuildLibsCommand extends BaseCommand
 {
     public function configure(): void
     {
-        $this->addArgument('libraries', InputArgument::REQUIRED, 'The library packages will be compiled, comma separated');
+        $this->addArgument(
+            'libraries',
+            InputArgument::REQUIRED,
+            'The library packages will be compiled, comma separated',
+            suggestedValues: function (CompletionInput $input) {
+                $packages = [];
+                foreach (PackageLoader::getPackages(['target', 'library']) as $name => $_) {
+                    $packages[] = $name;
+                }
+                $val = $input->getCompletionValue();
+                return array_filter($packages, fn ($name) => str_starts_with($name, $val));
+            }
+        );
         // Builder options
         $this->getDefinition()->addOptions([
             new InputOption('with-suggests', ['L', 'E'], null, 'Resolve and install suggested packages as well'),