diff --git a/.github/workflows/sonarcube.yaml b/.github/workflows/sonarcube.yaml
deleted file mode 100644
index ff31301dda76..000000000000
--- a/.github/workflows/sonarcube.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: SonarCube
-
-on:
-    push:
-        branches:
-            - master
-
-jobs:
-    sonnar_cloud:
-        runs-on: ubuntu-latest
-        steps:
-            -   uses: actions/checkout@master
-                with:
-                    # sonar needs non-shallow clone
-                    fetch-depth: 10000
-            -   uses: sonarsource/sonarcloud-github-action@master
-                env:
-                    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-                    # generate here: https://sonarcloud.io/account/security/
-                    SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
diff --git a/README.md b/README.md
index b6937a43f6dd..9e74b0f0db90 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@
 
 [![Coverage Status](https://img.shields.io/coveralls/rectorphp/rector/master.svg?style=flat-square)](https://coveralls.io/github/rectorphp/rector?branch=master)
 [![Downloads](https://img.shields.io/packagist/dt/rector/rector.svg?style=flat-square)](https://packagist.org/packages/rector/rector)
-[![SonarCube](https://img.shields.io/badge/SonarCube_Debt-%3C30-brightgreen.svg?style=flat-square)](https://sonarcloud.io/dashboard?id=rectorphp_rector)
 
 <br>
 
diff --git a/sonar-project.properties b/sonar-project.properties
deleted file mode 100644
index e571507e64b8..000000000000
--- a/sonar-project.properties
+++ /dev/null
@@ -1,15 +0,0 @@
-# see https://sonarcloud.io/documentation/project-administration/narrowing-the-focus/
-sonar.organization=rectorphp
-sonar.projectKey=rectorphp_rector
-
-# relative paths to source
-# wildcards don't work :(
-sonar.sources=src,rules/autodiscovery/src,rules/architecture/src,packages/attribute-aware-php-doc/src,packages/better-php-doc-parser/src,rules/cakephp/src,rules/code-quality/src,rules/coding-style/src,packages/console-differ/src,rules/dead-code/src,rules/doctrine/src,rules/doctrine-code-quality/src,packages/file-system-rector/src,rules/laravel/src,rules/legacy/src,rules/mysql-to-mysqli/src,rules/nette-tester-to-phpunit/src,rules/nette-to-symfony/src,rules/nette/src,packages/node-collector/src,packages/node-type-resolver/src,packages/node-name-resolver/src,packages/phpstan-static-type-mapper/src,rules/phpunit-symfony/src,rules/phpunit/src,rules/psr4/src,rules/php-spec-to-phpunit/src,rules/php52/src,rules/php53/src,rules/php54/src,rules/php55/src,rules/php56/src,rules/php70/src,rules/php71/src,rules/php72/src,rules/php73/src,rules/php74/src,rules/php80/src,rules/removing-static/src,rules/renaming/src,rules/restoration/src,rules/dependency-injection/src,rules/sensio/src,packages/static-type-mapper/src,rules/symfony-code-quality/src,rules/symfony-phpunit/src,rules/symfony/src,rules/twig/src,rules/type-declaration/src,packages/vendor-locker/src,packages/rector-generator/src,rules/code-quality-strict/src,rules/phalcon/src,rules/doctrine-gedmo-to-knplabs/src,rules/polyfill/src,rules/generic/src
-
-sonar.tests=tests,rules/autodiscovery/tests,rules/architecture/tests,packages/better-php-doc-parser/tests,rules/cakephp/tests,rules/code-quality/tests,rules/coding-style/tests,rules/dead-code/tests,rules/doctrine/tests,rules/doctrine-code-quality/tests,rules/laravel/tests,rules/legacy/tests,rules/mysql-to-mysqli/tests,rules/nette-tester-to-phpunit/tests,rules/nette-to-symfony/tests,rules/nette/tests,packages/node-type-resolver/tests,utils/phpstan-extensions/src,rules/phpunit-symfony/tests,rules/phpunit/tests,rules/psr4/tests,rules/php-spec-to-phpunit/tests,rules/php52/tests,rules/php53/tests,rules/php54/tests,rules/php55/tests,rules/php56/tests,rules/php70/tests,rules/php71/tests,rules/php72/tests,rules/php73/tests,rules/php74/tests,rules/php80/tests,rules/removing-static/tests,rules/renaming/tests,rules/restoration/tests,rules/dependency-injection/tests,rules/sensio/tests,rules/symfony-code-quality/tests,rules/symfony-phpunit/tests,rules/symfony/tests,rules/twig/tests,rules/type-declaration/tests,rules/code-quality-strict/tests,rules/phalcon/tests,utils/node-documentation-generator/src,utils/phpstan-type-mapper-checker/src,rules/doctrine-gedmo-to-knplabs/tests,rules/polyfill/tests,rules/generic/tests
-
-# possibly manual operation needed :/
-# https://docs.sonarqube.org/latest/project-administration/narrowing-the-focus/
-# see https://sonarcloud.io/project/settings?category=languages&id=rectorphp_rector
-sonar.php.file.suffixes=php
-sonar.php.exclusions=**/Fixture/**,**/Source/**,**/vendor/**