---
title: "regression testing"
description: "Testing of a previously tested program following modification to ensure that defects have not been introduced or uncovered in unchanged areas of the software, as a result of the changes made. It is performed when the software or its environment is changed. "
type: term
term_id: 468
language: English
language_code: gb
canonical: "https://glossary.istqb.org/en/term/regression-testing-3"
slug: "regression-testing"
url: "https://istqb-glossary.page/regression-testing/"
---

# regression testing

Testing of a previously tested program following modification to ensure that defects have not been introduced or uncovered in unchanged areas of the software, as a result of the changes made. It is performed when the software or its environment is changed. 

## Present in syllabi


- Advanced Test Analyst 2012
- Advanced Test Manager 2012
- Expert Test Management 2011
- Advanced Test Automation Engineer 2016
- Foundation Extension - Agile Tester 2014
- Foundation Extension - Model-Based Testing 2015
- Advanced Security Tester 2016

## Translations


- [Deutsch](https://istqb-glossary.page/de/regressionstest/) — Regressionstest
- [日本語](https://istqb-glossary.page/jp/%E3%83%AA%E3%82%AF%E3%83%AC%E3%83%83%E3%82%B7%E3%83%A7%E3%83%B3%E3%83%86%E3%82%B9%E3%83%88-regression-testing/) — リグレッションテスト（regression testing）
- [日本語](https://istqb-glossary.page/jp/%E5%9B%9E%E5%B8%B0%E3%83%86%E3%82%B9%E3%83%88-regression-testing/) — 回帰テスト（regression testing）
- [Português (Brasil)](https://istqb-glossary.page/br/teste-de-regressao/) — teste de regressão
- [Polski](https://istqb-glossary.page/pl/testowanie-regresji/) — testowanie regresji
- [Português](https://istqb-glossary.page/pt/teste-de-regressao/) — teste de regressão
- [Čeština](https://istqb-glossary.page/cz/regresni-testovani/) — regresní testování
- [Dansk](https://istqb-glossary.page/dk/regressionstest/) — regressionstest
- [Nederlands](https://istqb-glossary.page/nl/regressietesten/) — regressietesten
- [Norsk](https://istqb-glossary.page/no/regresjonstesting/) — regresjonstesting

Read this term online: https://istqb-glossary.page/regression-testing/

Markdown variant of the HTML page at https://istqb-glossary.page/regression-testing/ — part of the
ISTQB Glossary (https://istqb-glossary.page), a linkable, machine-readable
republication of the ISTQB glossary under fair use. No affiliation with ISTQB.