diff --git a/src/Command/CoreListerVersions.php b/src/Command/CoreListerVersions.php
index d3954bf..b3ba021 100644
--- a/src/Command/CoreListerVersions.php
+++ b/src/Command/CoreListerVersions.php
@@ -3,16 +3,12 @@
 namespace Spip\Cli\Command;
 
 use Symfony\Component\Console\Command\Command;
-use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class CoreListerVersions extends Command {
 	public const _SPIP_GIT_REPO = 'https://git.spip.net/spip/spip.git';
-	private $versions = [];
-	private $last_xy = '';
-	private $prev_xy = '';
 
 	protected function configure() {
 		$this
@@ -22,8 +18,8 @@ class CoreListerVersions extends Command {
 				'type',
 				't',
 				InputOption::VALUE_OPTIONAL,
-				'tags ou branches ?',
-				'tags' // Par défaut, les tags
+				'branches ou tags ?',
+				'branches' // Par défaut, les tags
 			)
 			->setAliases(['versions'])
 		;
@@ -47,23 +43,10 @@ class CoreListerVersions extends Command {
 			return Command::FAILURE;
 		}
 		else {
-			$this->versions = $this->listerVersions($type);
-			foreach ($this->versions as $key => $value) {
+			$versions = $this->listerVersions($type);
+			foreach ($versions as $key => $value) {
 				$output->writeln($value);
 			}
-
-			// On fait en sorte de renvoyer au même format X.Y les dernière
-			// et avant-dernière versions que ce soit des branches ou des tags
-			// Utilisable tel quel ensuite pour gérer la compat des plugins
-			if ($type == 'branches') {
-				$versions_xyz = preg_grep('/^\d+.\d+/', $this->versions);
-				$this->last_xy = end($versions_xyz);
-				$this->prev_xy = $this->trouverVersionPrecedente(end($versions_xyz));
-			}
-			else {
-				$this->last_xy = preg_replace('/^(\d+.\d+).\d+/', '${1}', end($this->versions));
-				$this->prev_xy = preg_replace('/^(\d+.\d+).\d+/', '${1}', $this->trouverVersionPrecedente(end($this->versions)));
-			}
 		}
 
 		return Command::SUCCESS;
@@ -75,8 +58,10 @@ class CoreListerVersions extends Command {
 	 * @param  mixed $type
 	 * @return array $liste
 	 */
-	public function listerVersions(string $type) {
-		$liste  = [];
+
+	public static function listerVersions(string $type = 'branches') {
+		$liste = [];
+
 		if ($type == 'tags') {
 			ob_start();
 			passthru('git ls-remote --tags ' . self::_SPIP_GIT_REPO);
@@ -91,7 +76,7 @@ class CoreListerVersions extends Command {
 
 		if ($type == 'branches') {
 			ob_start();
-			passthru('git ls-remote --heads origin');
+			passthru('git ls-remote --heads ' . self::_SPIP_GIT_REPO);
 			$branches = ob_get_contents();
 			ob_end_clean();
 
@@ -107,19 +92,18 @@ class CoreListerVersions extends Command {
 	/**
 	 * trouverVersionPrecedente
 	 *
-	 * @param  mixed	$version
-	 * @return string 	$prev_version
+	 * @param 	array	$versions
+	 * @param 	string 	$version_installee
+	 * @return 	string 	$prev_version
 	 */
-	public function trouverVersionPrecedente($version) {
-
-		$versions = $this->versions;
+	public static function trouverVersionPrecedente(array $versions, string $version_installee) {
 
-		if ($key = array_search($version, $versions)) {
+		if ($key = array_search($version_installee, $versions)) {
 			if (preg_match('/^\d+.\d+/', $versions[$key]) && array_key_exists($key - 1, $versions)) {
 				$key -= 1;
 				$prev_version = $versions[$key];
 
-				preg_match('/\d+.\d+/', $version, $version_xy);
+				preg_match('/\d+.\d+/', $version_installee, $version_xy);
 				preg_match('/\d+.\d+/', $prev_version, $prev_version_xy);
 
 				while ($version_xy[0] == $prev_version_xy[0]) {