diff --git a/webmail/common.php b/webmail/common.php
index d7d2436..c9941be 100644
--- a/webmail/common.php
+++ b/webmail/common.php
@@ -11,7 +11,7 @@
  *
  * @package    NOCC
  * @license    http://www.gnu.org/licenses/ GNU General Public License
- * @version    SVN: $Id: common.php 3075 2023-03-15 09:14:06Z oheil $
+ * @version    SVN: $Id: common.php 3080 2023-03-16 15:35:07Z oheil $
  */
 
 define('NOCC_DEBUG_LEVEL', 0);
@@ -57,7 +57,7 @@ require_once './utils/crypt.php';
 require_once './utils/translation.php';
 
 $conf->nocc_name = 'NOCC';
-$conf->nocc_version = '1.9.14';
+$conf->nocc_version = '1.9.15-dev';
 $conf->nocc_url = 'http://nocc.sourceforge.net/';
 
 $pwd_to_encrypt = false;
diff --git a/webmail/docs/NEWS b/webmail/docs/NEWS
index 66e56e5..fae0a1e 100644
--- a/webmail/docs/NEWS
+++ b/webmail/docs/NEWS
@@ -1,5 +1,10 @@
 
-Latest version is 1.9.14
+Latest version is 1.9.15-dev
+
+NOCC 1.9.15  ??????????????
+
+  Misc
+    * Added sha256 checksum for automatic update (Oliver Heil).
 
 NOCC 1.9.14  March 15, 2023
 
@@ -7,8 +12,6 @@ NOCC 1.9.14  March 15, 2023
     * Bug #511 : Auto-Update fails with php 8.2.3 (Oliver Heil).
                  Creating an early release before people switch to php 8.2.
 
-Latest version is 1.9.13
-
 NOCC 1.9.13  March 11, 2023
 
   Misc
diff --git a/webmail/update.php b/webmail/update.php
index b1910f7..8bcc361 100644
--- a/webmail/update.php
+++ b/webmail/update.php
@@ -259,7 +259,7 @@ if( ! isset($_GET['doUpdate']) || $_GET['doUpdate']!=1 ) {
 		echo '<h4 class="new-version-update-info">Update:</h3>';
 		echo '<ul class="new-version-update-info">';
 		echo '<li class="new-version-update-info">The latest NOCC version will be downloaded automatically from the projects web site: <a href="'.$download_link.'">'.$download_link.'</a></li>';
-		echo '<li class="new-version-update-info">The MD5 checksum will be checked.</li>';
+		echo '<li class="new-version-update-info">The MD5 or SHA256 checksum will be checked.</li>';
 		echo '<li class="new-version-update-info">The downloaded distribution archive will be unpacked overwriting your existing files.</li>';
 		echo '</ul>';
 	}
@@ -385,25 +385,49 @@ else {
 	}
 
 	if( $state_ok ) {
-		echo '<h2 class="new-version-update-info">Checking MD5 checksum</h2>';
-		$ckecksums=file_get_contents('http://nocc.sourceforge.net/checksums.txt');
+		echo '<h2 class="new-version-update-info">Checking checksum</h2>';
+		$ckecksums=file_get_contents('https://nocc.sourceforge.net/checksums.txt');
+		$checksum="";
+		$checksumType="";
 		$matches=array();
-		if( preg_match("/".$archive_name."\t(\S+)\R/",$ckecksums,$matches) ) {
-			$md5sum=$matches[1];
+		if( preg_match("/".$archive_name."\tsha256\t(\S+)\R/",$ckecksums,$matches) ) {
+			$checksum=$matches[1];
+			$checksumType="sha256";
+		}
+		else if( preg_match("/".$archive_name."\tmd5\t(\S+)\R/",$ckecksums,$matches) ) {
+			$checksum=$matches[1];
+			$checksumType="md5";
+		}
+		else if( preg_match("/".$archive_name."\t(\S+)\R/",$ckecksums,$matches) ) {
+			$checksum=$matches[1];
+			$checksumType="md5";
+		}
+		else {
+			echo '<p class="new-version-update-missing">Could not find checksum. See also <a href="http://nocc.sourceforge.net/download/" target="_blank">http://nocc.sourceforge.net/download/</a></p>';
+			$state_ok=false;
+		}
+		if( $checksumType == "md5" ) {
 			$md5sum_check=md5_file($archive_name);
-			if( $md5sum==$md5sum_check) {
-				echo '<p class="new-version-update-ok">MD5 checksums match: '.$md5sum.'. See also <a href="http://nocc.sourceforge.net/download/" target="_blank">http://nocc.sourceforge.net/download/</a></p>';
+			if( $checksum == $md5sum_check) {
+				echo '<p class="new-version-update-ok">MD5 checksums match: '.$checksum.'. See also <a href="http://nocc.sourceforge.net/download/" target="_blank">http://nocc.sourceforge.net/download/</a></p>';
 			}
 			else {
-				echo '<p class="new-version-update-missing">Failed md5 checksum match: '.$md5sum_check.' should be '.$md5sum.'.</p>';
+				echo '<p class="new-version-update-missing">Failed md5 checksum match: '.$md5sum_check.' should be '.$checksum.'.</p>';
 				echo '<p class="new-version-update-missing">See also <a href="http://nocc.sourceforge.net/download/" target="_blank">http://nocc.sourceforge.net/download/</a></p>';
 				$state_ok=false;
 			}
 		}
-		else {
-			echo '<p class="new-version-update-missing">Could not find md5 checksum. See also <a href="http://nocc.sourceforge.net/download/" target="_blank">http://nocc.sourceforge.net/download/</a></p>';
-			$state_ok=false;
-		}
+		if( $checksumType == "sha256" ) {
+			$sha256sum_check=hash_file("sha256",$archive_name);
+			if( $checksum == $sha256sum_check ) {
+				echo '<p class="new-version-update-ok">sha256 checksums match: '.$checksum.'. See also <a href="http://nocc.sourceforge.net/download/" target="_blank">http://nocc.sourceforge.net/download/</a></p>';
+			}
+			else {
+				echo '<p class="new-version-update-missing">Failed sha256 checksum match: '.$sha256sum_check.' should be '.$checksum.'.</p>';
+				echo '<p class="new-version-update-missing">See also <a href="http://nocc.sourceforge.net/download/" target="_blank">http://nocc.sourceforge.net/download/</a></p>';
+				$state_ok=false;
+			}
+		}	
 	}
 
 	if( $state_ok ) {