diff --git a/workflows/build.yml b/workflows/build.yml
deleted file mode 100644
index 002efca1f..000000000
--- a/workflows/build.yml
+++ /dev/null
@@ -1,114 +0,0 @@
-name: Build
-
-on:
-    push:
-        branches: [ master ]
-    pull_request:
-    release:
-        types: [ created ]
-
-jobs:
-    tests:
-        runs-on: ubuntu-latest
-        name: Build and test
-        strategy:
-            matrix:
-                php: [ "7.2", "7.4" ]
-                composer-version: [ "1" ]
-                coverage: [ "none" ]
-                publish-phar: [ false ]
-                git-fetch-depth: [ 1 ]
-                include:
-                    -   php: "7.3"
-                        composer-version: "1"
-                        coverage: "pcov"
-                        publish-phar: true
-                        git-fetch-depth: 0 # box/composer needs history to determine a recent git version
-                    -   php: "7.4"
-                        composer-version: "2"
-                        coverage: "none"
-                        publish-phar: false
-                        git-fetch-depth: 1
-
-        steps:
-            -   uses: actions/checkout@v2
-                with:
-                    fetch-depth: "${{ matrix.git-fetch-depth }}"
-
-            -   name: Setup PHP
-                uses: shivammathur/setup-php@v2
-                with:
-                    php-version: "${{ matrix.php }}"
-                    ini-values: "phar.readonly=0"
-                    tools: "composer:v${{ matrix.composer-version }}"
-                    coverage: "${{ matrix.coverage }}"
-
-            -   name: Get composer cache directory
-                id: composercache
-                run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-
-            -   name: Cache composer dependencies
-                uses: actions/cache@v2
-                with:
-                    path: ${{ steps.composercache.outputs.dir }}
-                    key: ${{ runner.os }}-composer-cache-${{ hashFiles('**/composer.lock') }}
-                    restore-keys: ${{ runner.os }}-composer-cache-
-
-            -   name: Set composer root version
-                run: |
-                    source .composer-root-version
-                    echo "COMPOSER_ROOT_VERSION=${COMPOSER_ROOT_VERSION}" >> $GITHUB_ENV
-
-            -   name: Install dependencies
-                run: composer install --no-interaction --no-progress --no-suggest --prefer-dist
-
-            -   name: Run check-composer-root-version
-                run: make check-composer-root-version
-
-            -   name: Run tests (coverage)
-                if: matrix.coverage == 'pcov'
-                run: make tc
-
-            -   name: install tree
-                if: matrix.publish-phar == true
-                run: sudo apt-get install -y tree
-
-            -   name: Run tests (e2e)
-                if: matrix.publish-phar == true
-                run: make e2e
-
-            -   name: Run tests
-                if: matrix.publish-phar == false
-                run: make tu
-
-            -   name: Run phpstan
-                if: matrix.publish-phar == false
-                run: make phpstan
-
-            -   uses: actions/upload-artifact@v1
-                name: Publish the PHAR
-                if: matrix.publish-phar == true
-                with:
-                    name: php-scoper.phar
-                    path: bin/php-scoper.phar
-
-    publish-phar:
-        runs-on: ubuntu-latest
-        name: Publish the PHAR
-        needs: tests
-        if: github.event_name == 'release'
-        steps:
-            -   uses: actions/download-artifact@v1
-                with:
-                    name: php-scoper.phar
-                    path: .
-
-            -   name: Upload php-scoper.phar
-                uses: actions/upload-release-asset@v1
-                env:
-                    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-                with:
-                    upload_url: ${{ github.event.release.upload_url }}
-                    asset_path: php-scoper.phar
-                    asset_name: php-scoper.phar
-                    asset_content_type: application/zip