diff --git a/modules/constants.php b/modules/constants.php
index 4af7188..e786bd5 100644
--- a/modules/constants.php
+++ b/modules/constants.php
@@ -1,7 +1,7 @@
 <?php
 
 // the project version
-define('PROJECT_VERSION', '1.5.3');
+define('PROJECT_VERSION', '1.5.5');
 
 // project URL
 define('PROJECT_URL', 'https://github.com/NanoTools/nanoNodeMonitor');