diff --git a/winixd/models/user.cpp b/winixd/models/user.cpp
index 6976327..f812ef5 100644
--- a/winixd/models/user.cpp
+++ b/winixd/models/user.cpp
@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2012-2022, Tomasz Sowa
+ * Copyright (c) 2012-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -151,6 +151,7 @@ bool User::do_migration(int & current_table_version)
 	ok = ok && morm::Model::do_migration(current_table_version, 1, this, &User::do_migration_to_1);
 	ok = ok && morm::Model::do_migration(current_table_version, 2, this, &User::do_migration_to_2);
 	ok = ok && morm::Model::do_migration(current_table_version, 3, this, &User::do_migration_to_3);
+	ok = ok && morm::Model::do_migration(current_table_version, 4, this, &User::do_migration_to_4);
 
 	return ok;
 }
@@ -209,6 +210,17 @@ bool User::do_migration_to_3()
 }
 
 
+bool User::do_migration_to_4()
+{
+	const char * str[] = {
+		"ALTER TABLE core.\"user\" ALTER COLUMN email TYPE character varying(320);",
+	};
+
+	size_t len = sizeof(str) / sizeof(const char*);
+	return db_query(str, len);
+}
+
+
 void User::display_name(EzcEnv & env)
 {
 	std::wstring * dname = admin_env.get_wstr(L"display_name");
diff --git a/winixd/models/user.h b/winixd/models/user.h
index d92cf45..7037d0a 100644
--- a/winixd/models/user.h
+++ b/winixd/models/user.h
@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2008-2022, Tomasz Sowa
+ * Copyright (c) 2008-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -158,6 +158,7 @@ private:
 	bool do_migration_to_1();
 	bool do_migration_to_2();
 	bool do_migration_to_3();
+	bool do_migration_to_4();
 
 	void id_is(EzcEnv & env); // takes one argument as a user id
 	bool is_guest();