diff --git a/debian/changelog b/debian/changelog
index 990d8c99..1c0ddb87 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-hedera-web (25.4.4) stable; urgency=low
+hedera-web (25.4.5) stable; urgency=low
 
   * Initial Release.
 
diff --git a/package.json b/package.json
index ae77234a..fbdf8a4c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hedera-web",
-  "version": "25.4.4",
+  "version": "25.4.5",
   "description": "Verdnatura web page",
   "license": "GPL-3.0",
   "repository": {
diff --git a/web/db-session-handler.php b/web/db-session-handler.php
index bdfd5e3a..d371eaa3 100644
--- a/web/db-session-handler.php
+++ b/web/db-session-handler.php
@@ -3,6 +3,7 @@
 namespace Vn\Web;
 
 class DbSessionHandler implements \SessionHandlerInterface {
+	const UPDATE_INTERVAL = 30;
 	private $db;
 	
 	function __construct($db) {
@@ -24,12 +25,23 @@ class DbSessionHandler implements \SessionHandlerInterface {
 	}
 
 	function write($sessionId, $sessionData) {
-		$this->db->query(
-			'INSERT INTO userSession SET
-					ssid = #, data = #, lastUpdate = NOW()
-				ON DUPLICATE KEY UPDATE
-					data = VALUES(data), lastUpdate = VALUES(lastUpdate)',
-			[$sessionId, $sessionData]);
+		$session = $this->db->getObject(
+			'SELECT data, lastUpdate < (NOW() - INTERVAL # SECOND) hasToRefresh
+				FROM userSession WHERE ssid = #',
+			[self::UPDATE_INTERVAL, $sessionId]
+		);
+
+		if (!isset($session)
+		|| $sessionData !== $session->data
+		|| $session->hasToRefresh) {
+			$this->db->query(
+				'INSERT INTO userSession SET
+						ssid = #, data = #, lastUpdate = NOW()
+					ON DUPLICATE KEY UPDATE
+						data = VALUES(data), lastUpdate = VALUES(lastUpdate)',
+				[$sessionId, $sessionData]);
+		}
+
 		return TRUE;
 	}
 
@@ -40,8 +52,8 @@ class DbSessionHandler implements \SessionHandlerInterface {
 
 	function gc($maxLifeTime) {
 		$this->db->query('DELETE FROM userSession
-			WHERE lastUpdate < TIMESTAMPADD(SECOND, -#, NOW())',
-			[$maxLifeTime]
+			WHERE lastUpdate < (NOW() - INTERVAL # SECOND)',
+			[$maxLifeTime + self::UPDATE_INTERVAL + 1]
 		);
 		return TRUE;
 	}