# Source: https://developers.openai.com/resources/cookbook/code-modernization.md

# Modernizing your Codebase with Codex

> Cookbook to modernize legacy codebases using the OpenAI Codex CLI.

- Type: Cookbook
- Tags: codex
- URL: /cookbook/examples/codex/code_modernization
- Created: 2025-11-19
- Updated: 2025-11-19

## Summary
Cookbook to modernize legacy codebases using the OpenAI Codex CLI.

## Details
Cookbook to modernize legacy codebases using the OpenAI Codex CLI.