diff --git a/lib/db/install.xml b/lib/db/install.xml
index 2658d15e734..e253b79a330 100644
--- a/lib/db/install.xml
+++ b/lib/db/install.xml
@@ -1991,7 +1991,7 @@
         <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
         <FIELD NAME="courseid" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false" COMMENT="The course this item is part of"/>
         <FIELD NAME="categoryid" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false" COMMENT="(optional) the category group this item belongs to"/>
-        <FIELD NAME="itemname" TYPE="char" LENGTH="255" NOTNULL="false" SEQUENCE="false" COMMENT="The name of this item (pushed in by the module)"/>
+        <FIELD NAME="itemname" TYPE="char" LENGTH="1333" NOTNULL="false" SEQUENCE="false" COMMENT="The name of this item (pushed in by the module)"/>
         <FIELD NAME="itemtype" TYPE="char" LENGTH="30" NOTNULL="true" SEQUENCE="false" COMMENT="'mod', 'blocks', 'import', 'calculated' etc"/>
         <FIELD NAME="itemmodule" TYPE="char" LENGTH="30" NOTNULL="false" SEQUENCE="false" COMMENT="'forum', 'quiz', 'csv', etc"/>
         <FIELD NAME="iteminstance" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false" COMMENT="id of the item module"/>
diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index bc8a5c39475..d8209a65ead 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -1710,6 +1710,14 @@ function xmldb_main_upgrade($oldversion) {
         // Launch change of precision for field name.
         $dbman->change_field_precision($table, $field);
 
+        // Changing precision of field itemname on table grade_items to (1333).
+
+        $table = new xmldb_table('grade_items');
+        $field = new xmldb_field('itemname', XMLDB_TYPE_CHAR, '1333', null, null, null, null, 'categoryid');
+
+        // Launch change of precision for field itemname.
+        $dbman->change_field_precision($table, $field);
+
         // Main savepoint reached.
         upgrade_main_savepoint(true, 2025051600.01);
     }
diff --git a/version.php b/version.php
index 8c4d98a0083..955fb8dad86 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2025051600.00;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2025051600.01;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.
 $release  = '5.1dev (Build: 20250516)';    // Human-friendly version name