diff --git a/mod/lesson/db/install.xml b/mod/lesson/db/install.xml
index 99d3d9b8f18..88080ff4782 100644
--- a/mod/lesson/db/install.xml
+++ b/mod/lesson/db/install.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<XMLDB PATH="mod/lesson/db" VERSION="20150720" COMMENT="XMLDB file for Moodle mod/lesson"
+<XMLDB PATH="mod/lesson/db" VERSION="20250414" COMMENT="XMLDB file for Moodle mod/lesson"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="../../../lib/xmldb/xmldb.xsd"
 >
@@ -8,7 +8,7 @@
       <FIELDS>
         <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true"/>
         <FIELD NAME="course" TYPE="int" LENGTH="10" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
-        <FIELD NAME="name" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false"/>
+        <FIELD NAME="name" TYPE="char" LENGTH="1333" NOTNULL="true" SEQUENCE="false"/>
         <FIELD NAME="intro" TYPE="text" NOTNULL="false" SEQUENCE="false"/>
         <FIELD NAME="introformat" TYPE="int" LENGTH="4" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
         <FIELD NAME="practice" TYPE="int" LENGTH="3" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
diff --git a/mod/lesson/db/upgrade.php b/mod/lesson/db/upgrade.php
index 8ed5c56b104..ca1ff559f7e 100644
--- a/mod/lesson/db/upgrade.php
+++ b/mod/lesson/db/upgrade.php
@@ -48,6 +48,9 @@
  * @return bool
  */
 function xmldb_lesson_upgrade($oldversion) {
+    global $DB;
+    $dbman = $DB->get_manager();
+
     // Automatically generated Moodle v4.2.0 release upgrade line.
     // Put any upgrade step following this.
 
@@ -63,5 +66,18 @@ function xmldb_lesson_upgrade($oldversion) {
     // Automatically generated Moodle v5.0.0 release upgrade line.
     // Put any upgrade step following this.
 
+    if ($oldversion < 2025041401) {
+
+        // Changing precision of field name on table lesson to (1333).
+        $table = new xmldb_table('lesson');
+        $field = new xmldb_field('name', XMLDB_TYPE_CHAR, '1333', null, XMLDB_NOTNULL, null, null, 'course');
+
+        // Launch change of precision for field name.
+        $dbman->change_field_precision($table, $field);
+
+        // Lesson savepoint reached.
+        upgrade_mod_savepoint(true, 2025041401, 'lesson');
+    }
+
     return true;
 }
diff --git a/mod/lesson/mod_form.php b/mod/lesson/mod_form.php
index d10eb90cfe6..ec95d1e46e3 100644
--- a/mod/lesson/mod_form.php
+++ b/mod/lesson/mod_form.php
@@ -94,7 +94,7 @@ class mod_lesson_mod_form extends moodleform_mod {
             $mform->setType('name', PARAM_CLEANHTML);
         }
         $mform->addRule('name', null, 'required', null, 'client');
-        $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addRule('name', get_string('maximumchars', '', 1333), 'maxlength', 1333, 'client');
         $this->standard_intro_elements();
 
         // Appearance.
diff --git a/mod/lesson/version.php b/mod/lesson/version.php
index 01883382960..acd093762ed 100644
--- a/mod/lesson/version.php
+++ b/mod/lesson/version.php
@@ -24,7 +24,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2025041400;     // The current module version (Date: YYYYMMDDXX).
+$plugin->version   = 2025041401;     // The current module version (Date: YYYYMMDDXX).
 $plugin->requires  = 2025040800;    // Requires this Moodle version.
 $plugin->component = 'mod_lesson'; // Full name of the plugin (used for diagnostics)
 $plugin->cron      = 0;