diff --git a/src/Command/CoreListerVersions.php b/src/Command/CoreListerVersions.php
index 11d0aab..0e92f9f 100644
--- a/src/Command/CoreListerVersions.php
+++ b/src/Command/CoreListerVersions.php
@@ -89,6 +89,22 @@ class CoreListerVersions extends Command {
 		return $liste;
 	}
 
+	public static function trouverVersionStable(?array $branches = [], ?array $tags = []) {
+		if (empty($branches)) {
+			$branches = self::listerVersions('branches');
+		}
+		if (empty($tags)) {
+			$tags = self::listerVersions('tags');
+			natsort($tags);
+		}
+
+		$dernier_tag_xy = preg_replace('/(\d+).(\d+).\d+[a-z0-9+-]*$/', '${1}.${2}', end($tags));
+
+		if (array_search($dernier_tag_xy, $branches)) {
+			return $dernier_tag_xy;
+		}
+	}
+
 	/**
 	 * trouverVersionPrecedente
 	 *