diff --git a/kgv-updater.php b/kgv-updater.php
index 35e8f36..1a1d6df 100644
--- a/kgv-updater.php
+++ b/kgv-updater.php
@@ -5,7 +5,7 @@
  * Description: Aktualisiert KGV-Plugins direkt aus den Gitea-Repositories.
  * Update URI: https://git.apex-project.de/Wordpress_Plugins/KGV-Updater.git
  * Gitea Plugin URI: https://git.apex-project.de/Wordpress_Plugins/KGV-Updater.git
- * Version: 1.0.1
+ * Version: 1.0.3
  * Author: Ronny Grobel
  * Text Domain: kgv-updater
  */
@@ -17,6 +17,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 final class KGV_Updater {
 	const GITEA_HOST  = 'git.apex-project.de';
 	const GITEA_TOKEN = '';
+	const INSTALLED_TAGS_OPTION = 'kgv_updater_installed_tags';
 
 	private static $instance = null;
 
@@ -31,6 +32,7 @@ final class KGV_Updater {
 	private function __construct() {
 		add_filter( 'pre_set_site_transient_update_plugins', array( $this, 'inject_updates' ) );
 		add_filter( 'plugins_api', array( $this, 'plugins_api' ), 10, 3 );
+		add_action( 'upgrader_process_complete', array( $this, 'mark_installed_release_tags' ), 10, 2 );
 	}
 
 	public function inject_updates( $transient ) {
@@ -39,17 +41,22 @@ final class KGV_Updater {
 		}
 
 		$plugins = $this->get_managed_plugins();
+		$installed_tags = $this->get_installed_tags();
 
 		foreach ( $plugins as $plugin_file => $plugin_data ) {
 			$current_version = isset( $plugin_data['Version'] ) ? $plugin_data['Version'] : '';
 			$repo_url        = isset( $plugin_data['UpdateURI'] ) ? $plugin_data['UpdateURI'] : '';
 			$release         = $this->get_release_data( $repo_url );
+			$installed_tag   = isset( $installed_tags[ $plugin_file ] ) ? (string) $installed_tags[ $plugin_file ] : '';
+			$release_tag     = isset( $release['tag'] ) ? (string) $release['tag'] : '';
 
 			if ( empty( $release['version'] ) ) {
 				continue;
 			}
 
-			if ( version_compare( $release['version'], $current_version, '>' ) ) {
+			$tag_already_installed = '' !== $installed_tag && '' !== $release_tag && 0 === strcasecmp( $installed_tag, $release_tag );
+
+			if ( version_compare( $release['version'], $current_version, '>' ) && ! $tag_already_installed ) {
 				$transient->response[ $plugin_file ] = (object) array(
 					'id'          => $repo_url,
 					'slug'        => dirname( $plugin_file ),
@@ -74,6 +81,54 @@ final class KGV_Updater {
 		return $transient;
 	}
 
+	public function mark_installed_release_tags( $upgrader, $hook_extra ) {
+		if ( ! is_array( $hook_extra ) ) {
+			return;
+		}
+
+		if ( empty( $hook_extra['type'] ) || 'plugin' !== $hook_extra['type'] ) {
+			return;
+		}
+
+		if ( empty( $hook_extra['action'] ) || 'update' !== $hook_extra['action'] ) {
+			return;
+		}
+
+		if ( empty( $hook_extra['plugins'] ) || ! is_array( $hook_extra['plugins'] ) ) {
+			return;
+		}
+
+		$managed_plugins = $this->get_managed_plugins();
+		if ( empty( $managed_plugins ) ) {
+			return;
+		}
+
+		$update_transient = get_site_transient( 'update_plugins' );
+
+		foreach ( $hook_extra['plugins'] as $plugin_file ) {
+			if ( ! isset( $managed_plugins[ $plugin_file ] ) ) {
+				continue;
+			}
+
+			$tag = '';
+
+			if ( is_object( $update_transient ) && isset( $update_transient->response[ $plugin_file ] ) && is_object( $update_transient->response[ $plugin_file ] ) ) {
+				$package_url = isset( $update_transient->response[ $plugin_file ]->package ) ? (string) $update_transient->response[ $plugin_file ]->package : '';
+				$tag         = $this->extract_tag_from_package_url( $package_url );
+			}
+
+			if ( '' === $tag ) {
+				$repo_url = isset( $managed_plugins[ $plugin_file ]['UpdateURI'] ) ? (string) $managed_plugins[ $plugin_file ]['UpdateURI'] : '';
+				$release  = $this->get_release_data( $repo_url );
+				$tag      = isset( $release['tag'] ) ? (string) $release['tag'] : '';
+			}
+
+			if ( '' !== $tag ) {
+				$this->set_installed_tag( $plugin_file, $tag );
+			}
+		}
+	}
+
 	public function plugins_api( $result, $action, $args ) {
 		if ( 'plugin_information' !== $action || empty( $args->slug ) ) {
 			return $result;
@@ -262,6 +317,35 @@ final class KGV_Updater {
 		);
 	}
 
+	private function extract_tag_from_package_url( $package_url ) {
+		if ( '' === $package_url ) {
+			return '';
+		}
+
+		$path = (string) wp_parse_url( $package_url, PHP_URL_PATH );
+		if ( preg_match( '#/archive/([^/]+)\.zip$#i', $path, $matches ) ) {
+			return rawurldecode( $matches[1] );
+		}
+
+		return '';
+	}
+
+	private function get_installed_tags() {
+		$tags = get_site_option( self::INSTALLED_TAGS_OPTION, array() );
+
+		return is_array( $tags ) ? $tags : array();
+	}
+
+	private function set_installed_tag( $plugin_file, $tag ) {
+		if ( '' === $plugin_file || '' === $tag ) {
+			return;
+		}
+
+		$tags                  = $this->get_installed_tags();
+		$tags[ $plugin_file ]  = $tag;
+		update_site_option( self::INSTALLED_TAGS_OPTION, $tags );
+	}
+
 }
 
 KGV_Updater::instance();