diff --git a/framework/db/cubrid/QueryBuilder.php b/framework/db/cubrid/QueryBuilder.php
index 27a1a91d1f..3db5793930 100644
--- a/framework/db/cubrid/QueryBuilder.php
+++ b/framework/db/cubrid/QueryBuilder.php
@@ -156,7 +156,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
     {
         $sql = '';
         // limit is not optional in CUBRID
-        // http://www.cubrid.org/manual/90/en/LIMIT%20Clause
+        // https://www.cubrid.org/manual/en/9.3.0/sql/query/select.html#limit-clause
         // "You can specify a very big integer for row_count to display to the last row, starting from a specific row."
         if ($this->hasLimit($limit)) {
             $sql = 'LIMIT ' . $limit;
@@ -181,7 +181,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 
     /**
      * {@inheritdoc}
-     * @see http://www.cubrid.org/manual/93/en/sql/schema/table.html#drop-index-clause
+     * @see https://www.cubrid.org/manual/en/9.3.0/sql/schema/table.html#drop-index-clause
      */
     public function dropIndex($name, $table)
     {
diff --git a/framework/db/cubrid/Schema.php b/framework/db/cubrid/Schema.php
index 73a06c4d13..f049fca487 100644
--- a/framework/db/cubrid/Schema.php
+++ b/framework/db/cubrid/Schema.php
@@ -30,7 +30,7 @@ class Schema extends \yii\db\Schema implements ConstraintFinderInterface
 
     /**
      * @var array mapping from physical column types (keys) to abstract column types (values)
-     * Please refer to [CUBRID manual](http://www.cubrid.org/manual/91/en/sql/datatype.html) for
+     * Please refer to [CUBRID manual](https://www.cubrid.org/manual/en/9.3.0/sql/datatype.html) for
      * details on data types.
      */
     public $typeMap = [
@@ -345,7 +345,7 @@ class Schema extends \yii\db\Schema implements ConstraintFinderInterface
 
     /**
      * {@inheritdoc}
-     * @see http://www.cubrid.org/manual/91/en/sql/transaction.html#database-concurrency
+     * @see https://www.cubrid.org/manual/en/9.3.0/sql/transaction.html#database-concurrency
      */
     public function setTransactionIsolationLevel($level)
     {