diff --git a/common.php b/common.php
index 9d16d4bf..9386f2c4 100644
--- a/common.php
+++ b/common.php
@@ -27,7 +27,7 @@ if (version_compare(phpversion(), '5.6', '<')) die('PHP version 5.6 or higher is
 
 define('MYAAC', true);
 define('MYAAC_VERSION', '0.8.6');
-define('DATABASE_VERSION', 32);
+define('DATABASE_VERSION', 33);
 define('TABLE_PREFIX', 'myaac_');
 define('START_TIME', microtime(true));
 define('MYAAC_OS', stripos(PHP_OS, 'WIN') === 0 ? 'WINDOWS' : (strtoupper(PHP_OS) === 'DARWIN' ? 'MAC' : 'LINUX'));
diff --git a/install/includes/schema.sql b/install/includes/schema.sql
index 96e5216c..fc86b4bf 100644
--- a/install/includes/schema.sql
+++ b/install/includes/schema.sql
@@ -1,4 +1,4 @@
-SET @myaac_database_version = 32;
+SET @myaac_database_version = 33;
 
 CREATE TABLE `myaac_account_actions`
 (
@@ -324,7 +324,7 @@ CREATE TABLE `myaac_spells`
 
 CREATE TABLE `myaac_visitors`
 (
-	`ip` VARCHAR(16) NOT NULL,
+	`ip` VARCHAR(45) NOT NULL,
 	`lastvisit` INT(11) NOT NULL DEFAULT 0,
 	`page` VARCHAR(2048) NOT NULL,
 	UNIQUE (`ip`)
diff --git a/system/migrations/33.php b/system/migrations/33.php
new file mode 100644
index 00000000..12fe4c2c
--- /dev/null
+++ b/system/migrations/33.php
@@ -0,0 +1,6 @@
+<?php
+// Increase size of ip in myaac_visitors table
+// according to this answer: https://stackoverflow.com/questions/166132/maximum-length-of-the-textual-representation-of-an-ipv6-address
+// the size of ipv6 can be maximal 45 chars
+
+$db->exec('ALTER TABLE `' . TABLE_PREFIX . "visitors` MODIFY `ip` VARCHAR(45) NOT NULL;");